172604212440 has 128 divisors (see below), whose sum is σ = 578664414720. Its totient is φ = 40822860800.

The previous prime is 172604212421. The next prime is 172604212441. The reversal of 172604212440 is 44212406271.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172604212441) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1540524 + ... + 1648763.

It is an arithmetic number, because the mean of its divisors is an integer number (4520815740).

Almost surely, 2^172604212440 is an apocalyptic number.

172604212440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172604212440 is an abundant number, since it is smaller than the sum of its proper divisors (406060202280).

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

172604212440 is a wasteful number, since it uses less digits than its factorization.

172604212440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3189353 (or 3189349 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 33.

The spelling of 172604212440 in words is "one hundred seventy-two billion, six hundred four million, two hundred twelve thousand, four hundred forty".