172287963 has 12 divisors (see below), whose sum is σ = 259680720. Its totient is φ = 109864656.

The previous prime is 172287959. The next prime is 172287989. The reversal of 172287963 is 369782271.

It is not a de Polignac number, because 172287963 - 2² = 172287959 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172287923) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 415948 + ... + 416361.

It is an arithmetic number, because the mean of its divisors is an integer number (21640060).

Almost surely, 2^172287963 is an apocalyptic number.

172287963 is a deficient number, since it is larger than the sum of its proper divisors (87392757).

172287963 is a wasteful number, since it uses less digits than its factorization.

172287963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 832338 (or 832335 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 172287963 is about 13125.8509438436. The cubic root of 172287963 is about 556.4399617495.

The spelling of 172287963 in words is "one hundred seventy-two million, two hundred eighty-seven thousand, nine hundred sixty-three".