72863724 has 96 divisors (see below), whose sum is σ = 186955776. Its totient is φ = 22021120.

The previous prime is 72863669. The next prime is 72863729. The reversal of 72863724 is 42736827.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (72863729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 531784 + ... + 531920.

It is an arithmetic number, because the mean of its divisors is an integer number (1947456).

Almost surely, 2^72863724 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72863724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93477888).

72863724 is an abundant number, since it is smaller than the sum of its proper divisors (114092052).

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

72863724 is a wasteful number, since it uses less digits than its factorization.

72863724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255 (or 253 counting only the distinct ones).

The product of its digits is 112896, while the sum is 39.

The square root of 72863724 is about 8536.0250702537. The cubic root of 72863724 is about 417.6736920567.

The spelling of 72863724 in words is "seventy-two million, eight hundred sixty-three thousand, seven hundred twenty-four".