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30872744 = 237311251
BaseRepresentation
bin111010111000…
…1010010101000
32011002111102222
41311301102220
530400411434
63021413212
7523262000
oct165612250
964074388
1030872744
1116477171
12a40a208
13651c2c6
144159000
152a9c72e
hex1d714a8

30872744 has 32 divisors (see below), whose sum is σ = 67512000. Its totient is φ = 13230000.

The previous prime is 30872719. The next prime is 30872747. The reversal of 30872744 is 44727803.

It is not an unprimeable number, because it can be changed into a prime (30872747) 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, 2882 + ... + 8369.

It is an arithmetic number, because the mean of its divisors is an integer number (2109750).

Almost surely, 230872744 is an apocalyptic number.

It is an amenable number.

30872744 is an abundant number, since it is smaller than the sum of its proper divisors (36639256).

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

30872744 is a wasteful number, since it uses less digits than its factorization.

30872744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11278 (or 11260 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 35.

The square root of 30872744 is about 5556.3246845374. The cubic root of 30872744 is about 313.7076267490.

The spelling of 30872744 in words is "thirty million, eight hundred seventy-two thousand, seven hundred forty-four".

Divisors: 1 2 4 7 8 14 28 49 56 98 196 343 392 686 1372 2744 11251 22502 45004 78757 90008 157514 315028 551299 630056 1102598 2205196 3859093 4410392 7718186 15436372 30872744