172742650 has 24 divisors (see below), whose sum is σ = 335273184. Its totient is φ = 66092400.

The previous prime is 172742621. The next prime is 172742659. The reversal of 172742650 is 56247271.

It is not an unprimeable number, because it can be changed into a prime (172742659) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73956 + ... + 76255.

It is an arithmetic number, because the mean of its divisors is an integer number (13969716).

Almost surely, 2^172742650 is an apocalyptic number.

172742650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172742650 is a deficient number, since it is larger than the sum of its proper divisors (162530534).

172742650 is a wasteful number, since it uses less digits than its factorization.

172742650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150246 (or 150241 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 34.

The square root of 172742650 is about 13143.1598179433. The cubic root of 172742650 is about 556.9290339748.

The spelling of 172742650 in words is "one hundred seventy-two million, seven hundred forty-two thousand, six hundred fifty".