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30808659 = 3711312983
BaseRepresentation
bin111010110000…
…1101001010011
32010222020112110
41311201221103
530341334114
63020200403
7522604110
oct165415123
963866473
1030808659
1116433002
12a399103
1364c909b
14413d907
152a88759
hex1d61a53

30808659 has 16 divisors (see below), whose sum is σ = 47365632. Its totient is φ = 17447808.

The previous prime is 30808627. The next prime is 30808663. The reversal of 30808659 is 95680803.

It is not a de Polignac number, because 30808659 - 25 = 30808627 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30808619) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 4119 + ... + 8864.

It is an arithmetic number, because the mean of its divisors is an integer number (2960352).

Almost surely, 230808659 is an apocalyptic number.

30808659 is a deficient number, since it is larger than the sum of its proper divisors (16556973).

30808659 is a wasteful number, since it uses less digits than its factorization.

30808659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13106.

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 30808659 is about 5550.5548371311. The cubic root of 30808659 is about 313.4904137949.

The spelling of 30808659 in words is "thirty million, eight hundred eight thousand, six hundred fifty-nine".

Divisors: 1 3 7 21 113 339 791 2373 12983 38949 90881 272643 1467079 4401237 10269553 30808659