172273740 has 48 divisors (see below), whose sum is σ = 487801440. Its totient is φ = 45422080.

The previous prime is 172273711. The next prime is 172273747. The reversal of 172273740 is 47372271.

It is not an unprimeable number, because it can be changed into a prime (172273747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10791 + ... + 21470.

It is an arithmetic number, because the mean of its divisors is an integer number (10162530).

Almost surely, 2^172273740 is an apocalyptic number.

172273740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172273740 is an abundant number, since it is smaller than the sum of its proper divisors (315527700).

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

172273740 is a wasteful number, since it uses less digits than its factorization.

172273740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32362 (or 32360 counting only the distinct ones).

The product of its (nonzero) digits is 16464, while the sum is 33.

The square root of 172273740 is about 13125.3091392165. The cubic root of 172273740 is about 556.4246492784.

The spelling of 172273740 in words is "one hundred seventy-two million, two hundred seventy-three thousand, seven hundred forty".