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30514480 = 245675693
BaseRepresentation
bin111010001100…
…1110100110000
32010102021222221
41310121310300
530302430410
63010010424
7520240333
oct164316460
963367887
1030514480
1116251a87
12a276a14
136425209
1440a461a
152a2b4da
hex1d19d30

30514480 has 40 divisors (see below), whose sum is σ = 72017712. Its totient is φ = 12021504.

The previous prime is 30514459. The next prime is 30514481. The reversal of 30514480 is 8441503.

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×305144802 = 1862266979340800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30514481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2514 + ... + 8206.

Almost surely, 230514480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30514480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36008856).

30514480 is an abundant number, since it is smaller than the sum of its proper divisors (41503232).

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

30514480 is a wasteful number, since it uses less digits than its factorization.

30514480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5773 (or 5767 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 30514480 is about 5523.9913106376. The cubic root of 30514480 is about 312.4894247088.

Adding to 30514480 its reverse (8441503), we get a palindrome (38955983).

The spelling of 30514480 in words is "thirty million, five hundred fourteen thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 40 67 80 134 268 335 536 670 1072 1340 2680 5360 5693 11386 22772 28465 45544 56930 91088 113860 227720 381431 455440 762862 1525724 1907155 3051448 3814310 6102896 7628620 15257240 30514480