72293724 has 36 divisors (see below), whose sum is σ = 193493664. Its totient is φ = 22680192.

The previous prime is 72293719. The next prime is 72293729. The reversal of 72293724 is 42739227.

It is an interprime number because it is at equal distance from previous prime (72293719) and next prime (72293729).

It is a tau number, because it is divible by the number of its divisors (36).

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 (72293729) 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, 58452 + ... + 59675.

It is an arithmetic number, because the mean of its divisors is an integer number (5374824).

Almost surely, 2^72293724 is an apocalyptic number.

It is an amenable number.

72293724 is an abundant number, since it is smaller than the sum of its proper divisors (121199940).

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

72293724 is a wasteful number, since it uses less digits than its factorization.

72293724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118154 (or 118149 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 72293724 is about 8502.5716109892. The cubic root of 72293724 is about 416.5817105368.

The spelling of 72293724 in words is "seventy-two million, two hundred ninety-three thousand, seven hundred twenty-four".