72471768 has 16 divisors (see below), whose sum is σ = 181179480. Its totient is φ = 24157248.

The previous prime is 72471761. The next prime is 72471779. The reversal of 72471768 is 86717427.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72471761) 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, 1509805 + ... + 1509852.

Almost surely, 2^72471768 is an apocalyptic number.

It is an amenable number.

72471768 is an abundant number, since it is smaller than the sum of its proper divisors (108707712).

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

72471768 is a wasteful number, since it uses less digits than its factorization.

72471768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3019666 (or 3019662 counting only the distinct ones).

The product of its digits is 131712, while the sum is 42.

The square root of 72471768 is about 8513.0351814144. The cubic root of 72471768 is about 416.9234140991.

The spelling of 72471768 in words is "seventy-two million, four hundred seventy-one thousand, seven hundred sixty-eight".