72213337 has 16 divisors (see below), whose sum is σ = 84602880. Its totient is φ = 60361488.

The previous prime is 72213329. The next prime is 72213359. The reversal of 72213337 is 73331227.

It is a cyclic number.

It is not a de Polignac number, because 72213337 - 2³ = 72213329 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72213367) 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, 49464 + ... + 50902.

It is an arithmetic number, because the mean of its divisors is an integer number (5287680).

Almost surely, 2^72213337 is an apocalyptic number.

It is an amenable number.

72213337 is a deficient number, since it is larger than the sum of its proper divisors (12389543).

72213337 is a wasteful number, since it uses less digits than its factorization.

72213337 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1620.

The product of its digits is 5292, while the sum is 28.

The square root of 72213337 is about 8497.8430792761. The cubic root of 72213337 is about 416.4272472722.

The spelling of 72213337 in words is "seventy-two million, two hundred thirteen thousand, three hundred thirty-seven".