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30740816 = 244146861
BaseRepresentation
bin111010101000…
…1000101010000
32010211210110202
41311101011100
530332201231
63014514332
7522202241
oct165210520
963753422
1030740816
1116397037
12a3659a8
1364a4242
144122cc8
152a735cb
hex1d51150

30740816 has 20 divisors (see below), whose sum is σ = 61014324. Its totient is φ = 14995200.

The previous prime is 30740813. The next prime is 30740819. The reversal of 30740816 is 61804703.

It is an interprime number because it is at equal distance from previous prime (30740813) and next prime (30740819).

It can be written as a sum of positive squares in 2 ways, for example, as 5740816 + 25000000 = 2396^2 + 5000^2 .

It is a congruent number.

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

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22775 + ... + 24086.

Almost surely, 230740816 is an apocalyptic number.

It is an amenable number.

30740816 is a deficient number, since it is larger than the sum of its proper divisors (30273508).

30740816 is a wasteful number, since it uses less digits than its factorization.

30740816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46910 (or 46904 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 30740816 is about 5544.4400979720. The cubic root of 30740816 is about 313.2601348051.

The spelling of 30740816 in words is "thirty million, seven hundred forty thousand, eight hundred sixteen".

Divisors: 1 2 4 8 16 41 82 164 328 656 46861 93722 187444 374888 749776 1921301 3842602 7685204 15370408 30740816