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30900632 = 2371972801
BaseRepresentation
bin111010111100…
…0000110011000
32011010220200212
41311320012120
530402310012
63022150252
7523436210
oct165700630
964126625
1030900632
1116496114
12a422388
13652bbc9
144165240
152aa5b22
hex1d78198

30900632 has 32 divisors (see below), whose sum is σ = 66575520. Its totient is φ = 13171200.

The previous prime is 30900607. The next prime is 30900671. The reversal of 30900632 is 23600903.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30900598 and 30900607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9632 + ... + 12432.

It is an arithmetic number, because the mean of its divisors is an integer number (2080485).

Almost surely, 230900632 is an apocalyptic number.

It is an amenable number.

30900632 is an abundant number, since it is smaller than the sum of its proper divisors (35674888).

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

30900632 is a wasteful number, since it uses less digits than its factorization.

30900632 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3011 (or 3007 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 23.

The square root of 30900632 is about 5558.8336906225. The cubic root of 30900632 is about 313.8020578900.

The spelling of 30900632 in words is "thirty million, nine hundred thousand, six hundred thirty-two".

Divisors: 1 2 4 7 8 14 28 56 197 394 788 1379 1576 2758 2801 5516 5602 11032 11204 19607 22408 39214 78428 156856 551797 1103594 2207188 3862579 4414376 7725158 15450316 30900632