72881227 has 8 divisors (see below), whose sum is σ = 80523936. Its totient is φ = 65611392.

The previous prime is 72881219. The next prime is 72881233. The reversal of 72881227 is 72218827.

It is a happy number.

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 72881227 - 2³ = 72881219 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (72881827) 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, 92808 + ... + 93589.

It is an arithmetic number, because the mean of its divisors is an integer number (10065492).

Almost surely, 2^72881227 is an apocalyptic number.

72881227 is a deficient number, since it is larger than the sum of its proper divisors (7642709).

72881227 is a wasteful number, since it uses less digits than its factorization.

72881227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186437.

The product of its digits is 25088, while the sum is 37.

The square root of 72881227 is about 8537.0502516970. The cubic root of 72881227 is about 417.7071332852.

It can be divided in two parts, 7288 and 1227, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 72881227 in words is "seventy-two million, eight hundred eighty-one thousand, two hundred twenty-seven".