73215881 has 8 divisors (see below), whose sum is σ = 74188800. Its totient is φ = 72249408.

The previous prime is 73215871. The next prime is 73215907. The reversal of 73215881 is 18851237.

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

It is a cyclic number.

It is not a de Polignac number, because 73215881 - 2⁶ = 73215817 is a prime.

It is a super-2 number, since 2×73215881² = 10721130461212322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (73215841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23825 + ... + 26721.

It is an arithmetic number, because the mean of its divisors is an integer number (9273600).

Almost surely, 2^73215881 is an apocalyptic number.

It is an amenable number.

73215881 is a deficient number, since it is larger than the sum of its proper divisors (972919).

73215881 is a wasteful number, since it uses less digits than its factorization.

73215881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3223.

The product of its digits is 13440, while the sum is 35.

The square root of 73215881 is about 8556.6278988863. The cubic root of 73215881 is about 418.3454958907.

The spelling of 73215881 in words is "seventy-three million, two hundred fifteen thousand, eight hundred eighty-one".