172842736 has 20 divisors (see below), whose sum is σ = 365327064. Its totient is φ = 78564800.

The previous prime is 172842727. The next prime is 172842749. The reversal of 172842736 is 637248271.

172842736 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×172842736² = 59749222775931392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 490855 + ... + 491206.

Almost surely, 2^172842736 is an apocalyptic number.

172842736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

172842736 is an abundant number, since it is smaller than the sum of its proper divisors (192484328).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

172842736 is a wasteful number, since it uses less digits than its factorization.

172842736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 982080 (or 982074 counting only the distinct ones).

The product of its digits is 112896, while the sum is 40.

The square root of 172842736 is about 13146.9667984672. The cubic root of 172842736 is about 557.0365735960.

The spelling of 172842736 in words is "one hundred seventy-two million, eight hundred forty-two thousand, seven hundred thirty-six".