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30047408 = 241999437
BaseRepresentation
bin111001010011…
…1110010110000
32002112120021222
41302213302300
530143004113
62552004212
7513253526
oct162476260
962476258
1030047408
1115a63076
12a090668
1362c0741
143dc2316
152987e08
hex1ca7cb0

30047408 has 20 divisors (see below), whose sum is σ = 58515600. Its totient is φ = 14946624.

The previous prime is 30047389. The next prime is 30047471. The reversal of 30047408 is 80474003.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1535 + ... + 7902.

It is an arithmetic number, because the mean of its divisors is an integer number (2925780).

Almost surely, 230047408 is an apocalyptic number.

It is an amenable number.

30047408 is a deficient number, since it is larger than the sum of its proper divisors (28468192).

30047408 is a wasteful number, since it uses less digits than its factorization.

30047408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9644 (or 9638 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 30047408 is about 5481.5516051571. The cubic root of 30047408 is about 310.8868396527.

The spelling of 30047408 in words is "thirty million, forty-seven thousand, four hundred eight".

Divisors: 1 2 4 8 16 199 398 796 1592 3184 9437 18874 37748 75496 150992 1877963 3755926 7511852 15023704 30047408