172296440 has 48 divisors (see below), whose sum is σ = 392205240. Its totient is φ = 68120000.

The previous prime is 172296437. The next prime is 172296451. The reversal of 172296440 is 44692271.

It is a self number, because there is not a number n which added to its sum of digits gives 172296440.

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 11 ways as a sum of consecutive naturals, for example, 686315 + ... + 686565.

Almost surely, 2^172296440 is an apocalyptic number.

172296440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172296440 is an abundant number, since it is smaller than the sum of its proper divisors (219908800).

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

172296440 is a wasteful number, since it uses less digits than its factorization.

172296440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524 (or 389 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 172296440 is about 13126.1738522694. The cubic root of 172296440 is about 556.4490876805.

The spelling of 172296440 in words is "one hundred seventy-two million, two hundred ninety-six thousand, four hundred forty".