172990363 has 16 divisors (see below), whose sum is σ = 215836096. Its totient is φ = 134991360.

The previous prime is 172990361. The next prime is 172990369. The reversal of 172990363 is 363099271.

It is not a de Polignac number, because 172990363 - 2¹ = 172990361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172990361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6378 + ... + 19663.

It is an arithmetic number, because the mean of its divisors is an integer number (13489756).

Almost surely, 2^172990363 is an apocalyptic number.

172990363 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

172990363 is a deficient number, since it is larger than the sum of its proper divisors (42845733).

172990363 is a wasteful number, since it uses less digits than its factorization.

172990363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26134.

The product of its (nonzero) digits is 61236, while the sum is 40.

The square root of 172990363 is about 13152.5800890928. The cubic root of 172990363 is about 557.1951189477.

The spelling of 172990363 in words is "one hundred seventy-two million, nine hundred ninety thousand, three hundred sixty-three".