170972490 has 32 divisors (see below), whose sum is σ = 441899136. Its totient is φ = 42085440.

The previous prime is 170972479. The next prime is 170972509. The reversal of 170972490 is 94279071.

170972490 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 218806 + ... + 219585.

It is an arithmetic number, because the mean of its divisors is an integer number (13809348).

Almost surely, 2^170972490 is an apocalyptic number.

170972490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

170972490 is an abundant number, since it is smaller than the sum of its proper divisors (270926646).

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

170972490 is a wasteful number, since it uses less digits than its factorization.

170972490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438414.

The product of its (nonzero) digits is 31752, while the sum is 39.

The square root of 170972490 is about 13075.6449171733. The cubic root of 170972490 is about 555.0201437377.

The spelling of 170972490 in words is "one hundred seventy million, nine hundred seventy-two thousand, four hundred ninety".