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30741912 = 2332426971
BaseRepresentation
bin111010101000…
…1010110011000
32010211211222100
41311101112120
530332220122
63014523400
7522205365
oct165212630
963754870
1030741912
1116397943
12a366560
1364a48a6
14412346c
152a73aac
hex1d51598

30741912 has 24 divisors (see below), whose sum is σ = 83259540. Its totient is φ = 10247280.

The previous prime is 30741911. The next prime is 30741913. The reversal of 30741912 is 21914703.

It is an interprime number because it is at equal distance from previous prime (30741911) and next prime (30741913).

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30741911) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 213414 + ... + 213557.

Almost surely, 230741912 is an apocalyptic number.

It is an amenable number.

30741912 is an abundant number, since it is smaller than the sum of its proper divisors (52517628).

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

30741912 is a wasteful number, since it uses less digits than its factorization.

30741912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426983 (or 426976 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 30741912 is about 5544.5389348439. The cubic root of 30741912 is about 313.2638576408.

The spelling of 30741912 in words is "thirty million, seven hundred forty-one thousand, nine hundred twelve".

Divisors: 1 2 3 4 6 8 9 12 18 24 36 72 426971 853942 1280913 1707884 2561826 3415768 3842739 5123652 7685478 10247304 15370956 30741912