172493460 has 72 divisors (see below), whose sum is σ = 524299776. Its totient is φ = 45904320.

The previous prime is 172493423. The next prime is 172493467. The reversal of 172493460 is 64394271.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172493467) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 173565 + ... + 174555.

Almost surely, 2^172493460 is an apocalyptic number.

172493460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

172493460 is an abundant number, since it is smaller than the sum of its proper divisors (351806316).

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

172493460 is a wasteful number, since it uses less digits than its factorization.

172493460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1973 (or 1968 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 172493460 is about 13133.6765606589. The cubic root of 172493460 is about 556.6611056771.

The spelling of 172493460 in words is "one hundred seventy-two million, four hundred ninety-three thousand, four hundred sixty".