72599994 has 48 divisors (see below), whose sum is σ = 164063328. Its totient is φ = 23180256.

The previous prime is 72599987. The next prime is 72600001. The reversal of 72599994 is 49999527.

It is an interprime number because it is at equal distance from previous prime (72599987) and next prime (72600001).

It is a self number, because there is not a number n which added to its sum of digits gives 72599994.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43809 + ... + 45435.

It is an arithmetic number, because the mean of its divisors is an integer number (3417986).

Almost surely, 2^72599994 is an apocalyptic number.

72599994 is a gapful number since it is divisible by the number (74) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 72599994, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82031664).

72599994 is an abundant number, since it is smaller than the sum of its proper divisors (91463334).

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

72599994 is a wasteful number, since it uses less digits than its factorization.

72599994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1739 (or 1736 counting only the distinct ones).

The product of its digits is 1837080, while the sum is 54.

The square root of 72599994 is about 8520.5630095669. The cubic root of 72599994 is about 417.1691600152.

The spelling of 72599994 in words is "seventy-two million, five hundred ninety-nine thousand, nine hundred ninety-four".