172994736 has 20 divisors (see below), whose sum is σ = 446903192. Its totient is φ = 57664896.

The previous prime is 172994713. The next prime is 172994797. The reversal of 172994736 is 637499271.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (48), and also a Moran number because the ratio is a prime number: 3604057 = 172994736 / (1 + 7 + 2 + 9 + 9 + 4 + 7 + 3 + 6).

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 1801981 + ... + 1802076.

Almost surely, 2^172994736 is an apocalyptic number.

172994736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

172994736 is an abundant number, since it is smaller than the sum of its proper divisors (273908456).

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

172994736 is a wasteful number, since it uses less digits than its factorization.

172994736 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3604068 (or 3604062 counting only the distinct ones).

The product of its digits is 571536, while the sum is 48.

The square root of 172994736 is about 13152.7463291892. The cubic root of 172994736 is about 557.1998139949.

The spelling of 172994736 in words is "one hundred seventy-two million, nine hundred ninety-four thousand, seven hundred thirty-six".