172922530 has 16 divisors (see below), whose sum is σ = 339557184. Its totient is φ = 62880880.

The previous prime is 172922527. The next prime is 172922537. The reversal of 172922530 is 35229271.

It is a junction number, because it is equal to n+sod(n) for n = 172922492 and 172922501.

It is not an unprimeable number, because it can be changed into a prime (172922537) 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 7 ways as a sum of consecutive naturals, for example, 785902 + ... + 786121.

It is an arithmetic number, because the mean of its divisors is an integer number (21222324).

Almost surely, 2^172922530 is an apocalyptic number.

172922530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172922530 is a deficient number, since it is larger than the sum of its proper divisors (166634654).

172922530 is a wasteful number, since it uses less digits than its factorization.

172922530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1572041.

The product of its (nonzero) digits is 7560, while the sum is 31.

The square root of 172922530 is about 13150.0011406844. The cubic root of 172922530 is about 557.1222802895.

The spelling of 172922530 in words is "one hundred seventy-two million, nine hundred twenty-two thousand, five hundred thirty".