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30874641 = 375924919
BaseRepresentation
bin111010111000…
…1110000010001
32011002121001020
41311301300101
530400442031
63021430053
7523300350
oct165616021
964077036
1030874641
1116478636
12a40b329
136520125
144159997
152a9d096
hex1d71c11

30874641 has 16 divisors (see below), whose sum is σ = 47846400. Its totient is φ = 17342928.

The previous prime is 30874637. The next prime is 30874661. The reversal of 30874641 is 14647803.

It is not a de Polignac number, because 30874641 - 22 = 30874637 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30874621) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11221 + ... + 13698.

It is an arithmetic number, because the mean of its divisors is an integer number (2990400).

Almost surely, 230874641 is an apocalyptic number.

It is an amenable number.

30874641 is a deficient number, since it is larger than the sum of its proper divisors (16971759).

30874641 is a wasteful number, since it uses less digits than its factorization.

30874641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24988.

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 30874641 is about 5556.4953882821. The cubic root of 30874641 is about 313.7140519546.

The spelling of 30874641 in words is "thirty million, eight hundred seventy-four thousand, six hundred forty-one".

Divisors: 1 3 7 21 59 177 413 1239 24919 74757 174433 523299 1470221 4410663 10291547 30874641