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30740812 = 2229265007
BaseRepresentation
bin111010101000…
…1000101001100
32010211210110121
41311101011030
530332201222
63014514324
7522202234
oct165210514
963753417
1030740812
1116397033
12a3659a4
1364a423b
144122cc4
152a735c7
hex1d5114c

30740812 has 12 divisors (see below), whose sum is σ = 55651680. Its totient is φ = 14840336.

The previous prime is 30740807. The next prime is 30740813. The reversal of 30740812 is 21804703.

It is not an unprimeable number, because it can be changed into a prime (30740813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 132388 + ... + 132619.

It is an arithmetic number, because the mean of its divisors is an integer number (4637640).

Almost surely, 230740812 is an apocalyptic number.

It is an amenable number.

30740812 is a deficient number, since it is larger than the sum of its proper divisors (24910868).

30740812 is a wasteful number, since it uses less digits than its factorization.

30740812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 265040 (or 265038 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 30740812 is about 5544.4397372503. The cubic root of 30740812 is about 313.2601212179.

The spelling of 30740812 in words is "thirty million, seven hundred forty thousand, eight hundred twelve".

Divisors: 1 2 4 29 58 116 265007 530014 1060028 7685203 15370406 30740812