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30448680 = 2335892851
BaseRepresentation
bin111010000100…
…1110000101000
32010021221201220
41310021300220
530243324210
63004342040
7516544443
oct164116050
963257656
1030448680
11162075a9
12a244920
136401292
14408865a
152a16c70
hex1d09c28

30448680 has 64 divisors (see below), whose sum is σ = 92404800. Its totient is φ = 8025600.

The previous prime is 30448679. The next prime is 30448681. The reversal of 30448680 is 8684403.

It is an interprime number because it is at equal distance from previous prime (30448679) and next prime (30448681).

It is a super-2 number, since 2×304486802 = 1854244227484800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30448681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9255 + ... + 12105.

It is an arithmetic number, because the mean of its divisors is an integer number (1443825).

Almost surely, 230448680 is an apocalyptic number.

30448680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30448680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46202400).

30448680 is an abundant number, since it is smaller than the sum of its proper divisors (61956120).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30448680 is a wasteful number, since it uses less digits than its factorization.

30448680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2954 (or 2950 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 33.

The square root of 30448680 is about 5518.0322579702. The cubic root of 30448680 is about 312.2646505318.

It can be divided in two parts, 304 and 48680, that added together give a palindrome (48984).

The spelling of 30448680 in words is "thirty million, four hundred forty-eight thousand, six hundred eighty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 89 120 178 267 356 445 534 712 890 1068 1335 1780 2136 2670 2851 3560 5340 5702 8553 10680 11404 14255 17106 22808 28510 34212 42765 57020 68424 85530 114040 171060 253739 342120 507478 761217 1014956 1268695 1522434 2029912 2537390 3044868 3806085 5074780 6089736 7612170 10149560 15224340 30448680