72416215 has 16 divisors (see below), whose sum is σ = 89746272. Its totient is φ = 56052864.

The previous prime is 72416207. The next prime is 72416231. The reversal of 72416215 is 51261427.

It is a cyclic number.

It is not a de Polignac number, because 72416215 - 2³ = 72416207 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 35452 + ... + 37438.

It is an arithmetic number, because the mean of its divisors is an integer number (5609142).

Almost surely, 2^72416215 is an apocalyptic number.

72416215 is a deficient number, since it is larger than the sum of its proper divisors (17330057).

72416215 is a wasteful number, since it uses less digits than its factorization.

72416215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2226.

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

The square root of 72416215 is about 8509.7717360691. The cubic root of 72416215 is about 416.8168564346.

It can be divided in two parts, 7241 and 6215, that added together give a square (13456 = 116²).

The spelling of 72416215 in words is "seventy-two million, four hundred sixteen thousand, two hundred fifteen".