172473940 has 24 divisors (see below), whose sum is σ = 362615400. Its totient is φ = 68909568.

The previous prime is 172473913. The next prime is 172473947. The reversal of 172473940 is 49374271.

It can be written as a sum of positive squares in 4 ways, for example, as 34082244 + 138391696 = 5838^2 + 11764^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 172473940.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172473947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14536 + ... + 23584.

It is an arithmetic number, because the mean of its divisors is an integer number (15108975).

Almost surely, 2^172473940 is an apocalyptic number.

172473940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172473940 is an abundant number, since it is smaller than the sum of its proper divisors (190141460).

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

172473940 is a wasteful number, since it uses less digits than its factorization.

172473940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10011 (or 10009 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 172473940 is about 13132.9334118467. The cubic root of 172473940 is about 556.6401069395.

The spelling of 172473940 in words is "one hundred seventy-two million, four hundred seventy-three thousand, nine hundred forty".