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30664023 = 31341127151
BaseRepresentation
bin111010011111…
…0010101010111
32010200220010120
41310332111113
530322222043
63013123023
7521432325
oct164762527
963626116
1030664023
1116344375
12a329473
1364782c0
144102d15
152a5a983
hex1d3e557

30664023 has 32 divisors (see below), whose sum is σ = 45760512. Its totient is φ = 18144000.

The previous prime is 30664003. The next prime is 30664063. The reversal of 30664023 is 32046603.

It is not a de Polignac number, because 30664023 - 213 = 30655831 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 30663984 and 30664002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30664003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 202998 + ... + 203148.

It is an arithmetic number, because the mean of its divisors is an integer number (1430016).

Almost surely, 230664023 is an apocalyptic number.

30664023 is a deficient number, since it is larger than the sum of its proper divisors (15096489).

30664023 is a wasteful number, since it uses less digits than its factorization.

30664023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335.

The product of its (nonzero) digits is 2592, while the sum is 24.

The square root of 30664023 is about 5537.5105417507. The cubic root of 30664023 is about 312.9990677295. Note that the first 3 decimals are identical.

The spelling of 30664023 in words is "thirty million, six hundred sixty-four thousand, twenty-three".

Divisors: 1 3 13 39 41 123 127 151 381 453 533 1599 1651 1963 4953 5207 5889 6191 15621 18573 19177 57531 67691 80483 203073 241449 249301 747903 786257 2358771 10221341 30664023