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30800938 = 2719115793
BaseRepresentation
bin111010101111…
…1110000101010
32010221211221111
41311133300222
530341112223
63020100534
7522542440
oct165376052
963854844
1030800938
1116428223
12a39474a
1364c570c
14413ab90
152a8630d
hex1d5fc2a

30800938 has 16 divisors (see below), whose sum is σ = 55581120. Its totient is φ = 12505536.

The previous prime is 30800927. The next prime is 30800941. The reversal of 30800938 is 83900803.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 57631 + ... + 58162.

It is an arithmetic number, because the mean of its divisors is an integer number (3473820).

Almost surely, 230800938 is an apocalyptic number.

30800938 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

30800938 is a deficient number, since it is larger than the sum of its proper divisors (24780182).

30800938 is a wasteful number, since it uses less digits than its factorization.

30800938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115821.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 30800938 is about 5549.8592774952. The cubic root of 30800938 is about 313.4642235203.

The spelling of 30800938 in words is "thirty million, eight hundred thousand, nine hundred thirty-eight".

Divisors: 1 2 7 14 19 38 133 266 115793 231586 810551 1621102 2200067 4400134 15400469 30800938