72641215 has 8 divisors (see below), whose sum is σ = 89981568. Its totient is φ = 56238240.

The previous prime is 72641207. The next prime is 72641227. The reversal of 72641215 is 51214627.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 72641215 - 2³ = 72641207 is a prime.

It is a super-2 number, since 2×72641215² = 10553492233352450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 234172 + ... + 234481.

It is an arithmetic number, because the mean of its divisors is an integer number (11247696).

Almost surely, 2^72641215 is an apocalyptic number.

72641215 is a deficient number, since it is larger than the sum of its proper divisors (17340353).

72641215 is a wasteful number, since it uses less digits than its factorization.

72641215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468689.

The product of its digits is 3360, while the sum is 28.

The square root of 72641215 is about 8522.9815792362. The cubic root of 72641215 is about 417.2480988483.

The spelling of 72641215 in words is "seventy-two million, six hundred forty-one thousand, two hundred fifteen".