72215085 has 32 divisors (see below), whose sum is σ = 118080000. Its totient is φ = 37679616.

The previous prime is 72215071. The next prime is 72215093. The reversal of 72215085 is 58051227.

It is not a de Polignac number, because 72215085 - 2⁵ = 72215053 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176361 + ... + 176769.

It is an arithmetic number, because the mean of its divisors is an integer number (3690000).

Almost surely, 2^72215085 is an apocalyptic number.

It is an amenable number.

72215085 is a deficient number, since it is larger than the sum of its proper divisors (45864915).

72215085 is a wasteful number, since it uses less digits than its factorization.

72215085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 645.

The product of its (nonzero) digits is 5600, while the sum is 30.

The square root of 72215085 is about 8497.9459282817. The cubic root of 72215085 is about 416.4306072653.

The spelling of 72215085 in words is "seventy-two million, two hundred fifteen thousand, eighty-five".