172900494 has 160 divisors (see below), whose sum is σ = 457380000. Its totient is φ = 48335616.

The previous prime is 172900493. The next prime is 172900501. The reversal of 172900494 is 494009271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172900493) by changing a digit.

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 79 ways as a sum of consecutive naturals, for example, 1160332 + ... + 1160480.

It is an arithmetic number, because the mean of its divisors is an integer number (2858625).

Almost surely, 2^172900494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172900494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (228690000).

172900494 is an abundant number, since it is smaller than the sum of its proper divisors (284479506).

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

172900494 is a wasteful number, since it uses less digits than its factorization.

172900494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 215 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 172900494 is about 13149.1632433399. The cubic root of 172900494 is about 557.0986140691.

The spelling of 172900494 in words is "one hundred seventy-two million, nine hundred thousand, four hundred ninety-four".