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172792893 = 3713632941
BaseRepresentation
bin10100100110010…
…01110000111101
3110001010210021210
422103021300331
5323213333033
625051315033
74165500240
oct1223116075
9401123253
10172792893
118959a949
1249a4ba79
1329a4c620
1418d3d257
1510282d63
hexa4c9c3d

172792893 has 16 divisors (see below), whose sum is σ = 283558016. Its totient is φ = 91143360.

The previous prime is 172792891. The next prime is 172792967. The reversal of 172792893 is 398297271.

172792893 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 172792893 - 21 = 172792891 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172792891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 316198 + ... + 316743.

It is an arithmetic number, because the mean of its divisors is an integer number (17722376).

Almost surely, 2172792893 is an apocalyptic number.

172792893 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

172792893 is a deficient number, since it is larger than the sum of its proper divisors (110765123).

172792893 is a wasteful number, since it uses less digits than its factorization.

172792893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 632964.

The product of its digits is 381024, while the sum is 48.

The square root of 172792893 is about 13145.0710534405. The cubic root of 172792893 is about 556.9830238705.

The spelling of 172792893 in words is "one hundred seventy-two million, seven hundred ninety-two thousand, eight hundred ninety-three".

Divisors: 1 3 7 13 21 39 91 273 632941 1898823 4430587 8228233 13291761 24684699 57597631 172792893