172724374 has 12 divisors (see below), whose sum is σ = 267716772. Its totient is φ = 83575380.

The previous prime is 172724341. The next prime is 172724401. The reversal of 172724374 is 473427271.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 43012 + ... + 46855.

It is an arithmetic number, because the mean of its divisors is an integer number (22309731).

Almost surely, 2^172724374 is an apocalyptic number.

172724374 is a deficient number, since it is larger than the sum of its proper divisors (94992398).

172724374 is an equidigital number, since it uses as much as digits as its factorization.

172724374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89931 (or 89900 counting only the distinct ones).

The product of its digits is 65856, while the sum is 37.

The square root of 172724374 is about 13142.4645329558. The cubic root of 172724374 is about 556.9093924367.

The spelling of 172724374 in words is "one hundred seventy-two million, seven hundred twenty-four thousand, three hundred seventy-four".