172794490 has 16 divisors (see below), whose sum is σ = 339305760. Its totient is φ = 62834320.

The previous prime is 172794473. The next prime is 172794491. The reversal of 172794490 is 94497271.

It is not an unprimeable number, because it can be changed into a prime (172794491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 785320 + ... + 785539.

It is an arithmetic number, because the mean of its divisors is an integer number (21206610).

Almost surely, 2^172794490 is an apocalyptic number.

172794490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172794490 is a deficient number, since it is larger than the sum of its proper divisors (166511270).

172794490 is a wasteful number, since it uses less digits than its factorization.

172794490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1570877.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 172794490 is about 13145.1317985024. The cubic root of 172794490 is about 556.9847397960.

The spelling of 172794490 in words is "one hundred seventy-two million, seven hundred ninety-four thousand, four hundred ninety".