72986740 has 12 divisors (see below), whose sum is σ = 153272196. Its totient is φ = 29194688.

The previous prime is 72986737. The next prime is 72986743. The reversal of 72986740 is 4768927.

It is an interprime number because it is at equal distance from previous prime (72986737) and next prime (72986743).

It can be written as a sum of positive squares in 2 ways, for example, as 40678884 + 32307856 = 6378^2 + 5684^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72986743) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1824649 + ... + 1824688.

It is an arithmetic number, because the mean of its divisors is an integer number (12772683).

Almost surely, 2^72986740 is an apocalyptic number.

It is an amenable number.

72986740 is an abundant number, since it is smaller than the sum of its proper divisors (80285456).

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

72986740 is a wasteful number, since it uses less digits than its factorization.

72986740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3649346 (or 3649344 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 72986740 is about 8543.2277272703. The cubic root of 72986740 is about 417.9086130657.

The spelling of 72986740 in words is "seventy-two million, nine hundred eighty-six thousand, seven hundred forty".