172732040 has 64 divisors (see below), whose sum is σ = 440596800. Its totient is φ = 60417792.

The previous prime is 172731991. The next prime is 172732051. The reversal of 172732040 is 40237271.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1139 + ... + 18621.

It is an arithmetic number, because the mean of its divisors is an integer number (6884325).

Almost surely, 2^172732040 is an apocalyptic number.

172732040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 172732040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (220298400).

172732040 is an abundant number, since it is smaller than the sum of its proper divisors (267864760).

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

172732040 is a wasteful number, since it uses less digits than its factorization.

172732040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17526 (or 17522 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 172732040 is about 13142.7561797364. The cubic root of 172732040 is about 556.9176313902.

The spelling of 172732040 in words is "one hundred seventy-two million, seven hundred thirty-two thousand, forty".