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30837069 = 3215122691
BaseRepresentation
bin111010110100…
…0100101001101
32011000200111200
41311220211031
530343241234
63020540113
7523052664
oct165504515
964020450
1030837069
111645238a
12a3b1639
136508cb3
144149ddb
152a91d99
hex1d6894d

30837069 has 12 divisors (see below), whose sum is σ = 44839392. Its totient is φ = 20421000.

The previous prime is 30837061. The next prime is 30837071. The reversal of 30837069 is 96073803.

It is not a de Polignac number, because 30837069 - 23 = 30837061 is a prime.

It is a super-2 number, since 2×308370692 = 1901849649021522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30837061) 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 11 ways as a sum of consecutive naturals, for example, 9987 + ... + 12704.

It is an arithmetic number, because the mean of its divisors is an integer number (3736616).

Almost surely, 230837069 is an apocalyptic number.

It is an amenable number.

30837069 is a deficient number, since it is larger than the sum of its proper divisors (14002323).

30837069 is a wasteful number, since it uses less digits than its factorization.

30837069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22848 (or 22845 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 30837069 is about 5553.1134510291. The cubic root of 30837069 is about 313.5867452239.

The spelling of 30837069 in words is "thirty million, eight hundred thirty-seven thousand, sixty-nine".

Divisors: 1 3 9 151 453 1359 22691 68073 204219 3426341 10279023 30837069