172931040 has 72 divisors (see below), whose sum is σ = 590132088. Its totient is φ = 46114560.

The previous prime is 172931029. The next prime is 172931041. The reversal of 172931040 is 40139271.

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 172930995 and 172931013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172931041) 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, 58606 + ... + 61485.

It is an arithmetic number, because the mean of its divisors is an integer number (8196279).

Almost surely, 2^172931040 is an apocalyptic number.

172931040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172931040 is an abundant number, since it is smaller than the sum of its proper divisors (417201048).

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

172931040 is a wasteful number, since it uses less digits than its factorization.

172931040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 120112 (or 120101 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 27.

The square root of 172931040 is about 13150.3247108199. The cubic root of 172931040 is about 557.1314193200.

The spelling of 172931040 in words is "one hundred seventy-two million, nine hundred thirty-one thousand, forty".