172431490 has 48 divisors (see below), whose sum is σ = 393885504. Its totient is φ = 53743200.

The previous prime is 172431461. The next prime is 172431491. The reversal of 172431490 is 94134271.

It is not an unprimeable number, because it can be changed into a prime (172431491) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10606 + ... + 21385.

It is an arithmetic number, because the mean of its divisors is an integer number (8205948).

Almost surely, 2^172431490 is an apocalyptic number.

172431490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172431490 is an abundant number, since it is smaller than the sum of its proper divisors (221454014).

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

172431490 is a wasteful number, since it uses less digits than its factorization.

172431490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32023 (or 32016 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 31.

The square root of 172431490 is about 13131.3171464252. The cubic root of 172431490 is about 556.5944356700.

The spelling of 172431490 in words is "one hundred seventy-two million, four hundred thirty-one thousand, four hundred ninety".