72213407 has 6 divisors (see below), whose sum is σ = 84003408. Its totient is φ = 61897164.

The previous prime is 72213397. The next prime is 72213409. The reversal of 72213407 is 70431227.

It is not a de Polignac number, because 72213407 - 2⁸ = 72213151 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (72213409) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 736823 + ... + 736920.

It is an arithmetic number, because the mean of its divisors is an integer number (14000568).

Almost surely, 2^72213407 is an apocalyptic number.

72213407 is a deficient number, since it is larger than the sum of its proper divisors (11790001).

72213407 is a wasteful number, since it uses less digits than its factorization.

72213407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1473757 (or 1473750 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 26.

The square root of 72213407 is about 8497.8471979673. The cubic root of 72213407 is about 416.4273818267.

The spelling of 72213407 in words is "seventy-two million, two hundred thirteen thousand, four hundred seven".