172742630 has 8 divisors (see below), whose sum is σ = 310936752. Its totient is φ = 69097048.

The previous prime is 172742621. The next prime is 172742659. The reversal of 172742630 is 36247271.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8637122 + ... + 8637141.

It is an arithmetic number, because the mean of its divisors is an integer number (38867094).

Almost surely, 2^172742630 is an apocalyptic number.

172742630 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

172742630 is a deficient number, since it is larger than the sum of its proper divisors (138194122).

172742630 is a wasteful number, since it uses less digits than its factorization.

172742630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17274270.

The product of its (nonzero) digits is 14112, while the sum is 32.

The square root of 172742630 is about 13143.1590570913. The cubic root of 172742630 is about 556.9290124812.

The spelling of 172742630 in words is "one hundred seventy-two million, seven hundred forty-two thousand, six hundred thirty".