72727470 has 72 divisors (see below), whose sum is σ = 197234856. Its totient is φ = 19281888.

The previous prime is 72727469. The next prime is 72727477. The reversal of 72727470 is 7472727.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72727477) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 420304 + ... + 420476.

It is an arithmetic number, because the mean of its divisors is an integer number (2739373).

Almost surely, 2^72727470 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 72727470, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98617428).

72727470 is an abundant number, since it is smaller than the sum of its proper divisors (124507386).

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

72727470 is an equidigital number, since it uses as much as digits as its factorization.

72727470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 38416, while the sum is 36.

The square root of 72727470 is about 8528.0402203554. The cubic root of 72727470 is about 417.4131818950.

The spelling of 72727470 in words is "seventy-two million, seven hundred twenty-seven thousand, four hundred seventy".