172169620 has 24 divisors (see below), whose sum is σ = 413207424. Its totient is φ = 59029536.

The previous prime is 172169587. The next prime is 172169663. The reversal of 172169620 is 26961271.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 614752 + ... + 615031.

It is an arithmetic number, because the mean of its divisors is an integer number (17216976).

Almost surely, 2^172169620 is an apocalyptic number.

172169620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172169620 is an abundant number, since it is smaller than the sum of its proper divisors (241037804).

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

172169620 is a wasteful number, since it uses less digits than its factorization.

172169620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1229799 (or 1229797 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 172169620 is about 13121.3421569594. The cubic root of 172169620 is about 556.3125280886.

The spelling of 172169620 in words is "one hundred seventy-two million, one hundred sixty-nine thousand, six hundred twenty".