172369012 has 12 divisors (see below), whose sum is σ = 302423940. Its totient is φ = 85962176.

The previous prime is 172369009. The next prime is 172369019. The reversal of 172369012 is 210963271.

It can be written as a sum of positive squares in 2 ways, for example, as 27311076 + 145057936 = 5226^2 + 12044^2 .

It is a super-2 number, since 2×172369012² = 59422152595712288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172369019) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 53833 + ... + 56944.

It is an arithmetic number, because the mean of its divisors is an integer number (25201995).

Almost surely, 2^172369012 is an apocalyptic number.

It is an amenable number.

172369012 is a deficient number, since it is larger than the sum of its proper divisors (130054928).

172369012 is a wasteful number, since it uses less digits than its factorization.

172369012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111170 (or 111168 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 172369012 is about 13128.9379616175. The cubic root of 172369012 is about 556.5272029620.

The spelling of 172369012 in words is "one hundred seventy-two million, three hundred sixty-nine thousand, twelve".