72402620 has 48 divisors (see below), whose sum is σ = 160247808. Its totient is φ = 27424320.

The previous prime is 72402613. The next prime is 72402623. The reversal of 72402620 is 2620427.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72402623) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48485 + ... + 49955.

It is an arithmetic number, because the mean of its divisors is an integer number (3338496).

Almost surely, 2^72402620 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 72402620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80123904).

72402620 is an abundant number, since it is smaller than the sum of its proper divisors (87845188).

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

72402620 is a wasteful number, since it uses less digits than its factorization.

72402620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1610 (or 1608 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 72402620 is about 8508.9729109923. The cubic root of 72402620 is about 416.7907712095.

The spelling of 72402620 in words is "seventy-two million, four hundred two thousand, six hundred twenty".