72173460 has 48 divisors (see below), whose sum is σ = 209059200. Its totient is φ = 18582144.

The previous prime is 72173443. The next prime is 72173467. The reversal of 72173460 is 6437127.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72173467) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19000 + ... + 22479.

It is an arithmetic number, because the mean of its divisors is an integer number (4355400).

Almost surely, 2^72173460 is an apocalyptic number.

It is an amenable number.

72173460 is an abundant number, since it is smaller than the sum of its proper divisors (136885740).

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

72173460 is a wasteful number, since it uses less digits than its factorization.

72173460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41520 (or 41518 counting only the distinct ones).

The product of its (nonzero) digits is 7056, while the sum is 30.

The square root of 72173460 is about 8495.4964540043. The cubic root of 72173460 is about 416.3505812544.

The spelling of 72173460 in words is "seventy-two million, one hundred seventy-three thousand, four hundred sixty".