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30137632 = 257831621
BaseRepresentation
bin111001011110…
…1110100100000
32002201011001121
41302331310200
530203401012
62553542024
7514110550
oct162756440
962634047
1030137632
1116014938
12a114914
136322825
144007160
1529a4a07
hex1cbdd20

30137632 has 48 divisors (see below), whose sum is σ = 68668992. Its totient is φ = 12752640.

The previous prime is 30137623. The next prime is 30137663. The reversal of 30137632 is 23673103.

It is a junction number, because it is equal to n+sod(n) for n = 30137597 and 30137606.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17782 + ... + 19402.

It is an arithmetic number, because the mean of its divisors is an integer number (1430604).

Almost surely, 230137632 is an apocalyptic number.

30137632 is a gapful number since it is divisible by the number (32) 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 30137632, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34334496).

30137632 is an abundant number, since it is smaller than the sum of its proper divisors (38531360).

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

30137632 is a wasteful number, since it uses less digits than its factorization.

30137632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721 (or 1713 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 25.

The square root of 30137632 is about 5489.7752230852. The cubic root of 30137632 is about 311.1976975927.

The spelling of 30137632 in words is "thirty million, one hundred thirty-seven thousand, six hundred thirty-two".

Divisors: 1 2 4 7 8 14 16 28 32 56 83 112 166 224 332 581 664 1162 1328 1621 2324 2656 3242 4648 6484 9296 11347 12968 18592 22694 25936 45388 51872 90776 134543 181552 269086 363104 538172 941801 1076344 1883602 2152688 3767204 4305376 7534408 15068816 30137632