72215610 has 32 divisors (see below), whose sum is σ = 173904192. Its totient is φ = 19192320.

The previous prime is 72215593. The next prime is 72215617. The reversal of 72215610 is 1651227.

It is not an unprimeable number, because it can be changed into a prime (72215617) 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, 5290 + ... + 13130.

It is an arithmetic number, because the mean of its divisors is an integer number (5434506).

Almost surely, 2^72215610 is an apocalyptic number.

72215610 is an abundant number, since it is smaller than the sum of its proper divisors (101688582).

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

72215610 is a wasteful number, since it uses less digits than its factorization.

72215610 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8158.

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 72215610 is about 8497.9768180432. The cubic root of 72215610 is about 416.4316164060.

Adding to 72215610 its reverse (1651227), we get a palindrome (73866837).

The spelling of 72215610 in words is "seventy-two million, two hundred fifteen thousand, six hundred ten".