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30808996 = 2211036983
BaseRepresentation
bin111010110000…
…1101110100100
32010222020222221
41311201232210
530341341441
63020202124
7522605101
oct165415644
963866887
1030808996
1116433289
12a399344
1364c929a
14413daa8
152a888d1
hex1d61ba4

30808996 has 12 divisors (see below), whose sum is σ = 53972352. Its totient is φ = 15388328.

The previous prime is 30808979. The next prime is 30808997. The reversal of 30808996 is 69980803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30808997) 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 3 ways as a sum of consecutive naturals, for example, 921 + ... + 7903.

It is an arithmetic number, because the mean of its divisors is an integer number (4497696).

Almost surely, 230808996 is an apocalyptic number.

It is an amenable number.

30808996 is a deficient number, since it is larger than the sum of its proper divisors (23163356).

30808996 is a wasteful number, since it uses less digits than its factorization.

30808996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8090 (or 8088 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 30808996 is about 5550.5851943737. The cubic root of 30808996 is about 313.4915568273.

The spelling of 30808996 in words is "thirty million, eight hundred eight thousand, nine hundred ninety-six".

Divisors: 1 2 4 1103 2206 4412 6983 13966 27932 7702249 15404498 30808996