172260038 has 4 divisors (see below), whose sum is σ = 258390060. Its totient is φ = 86130018.

The previous prime is 172260037. The next prime is 172260043. The reversal of 172260038 is 830062271.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×172260038² = 59347041383522888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172260037) 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 as a sum of consecutive naturals, namely, 43065008 + ... + 43065011.

It is an arithmetic number, because the mean of its divisors is an integer number (64597515).

Almost surely, 2^172260038 is an apocalyptic number.

172260038 is a deficient number, since it is larger than the sum of its proper divisors (86130022).

172260038 is an equidigital number, since it uses as much as digits as its factorization.

172260038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86130021.

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 172260038 is about 13124.7871601790. The cubic root of 172260038 is about 556.4098969184.

The spelling of 172260038 in words is "one hundred seventy-two million, two hundred sixty thousand, thirty-eight".