72881234 has 8 divisors (see below), whose sum is σ = 113091660. Its totient is φ = 35184016.

The previous prime is 72881233. The next prime is 72881309. The reversal of 72881234 is 43218827.

It can be written as a sum of positive squares in 2 ways, for example, as 71453209 + 1428025 = 8453^2 + 1195^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 72881194 and 72881203.

It is not an unprimeable number, because it can be changed into a prime (72881233) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 628229 + ... + 628344.

Almost surely, 2^72881234 is an apocalyptic number.

72881234 is a deficient number, since it is larger than the sum of its proper divisors (40210426).

72881234 is a wasteful number, since it uses less digits than its factorization.

72881234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1256604.

The product of its digits is 21504, while the sum is 35.

The square root of 72881234 is about 8537.0506616747. The cubic root of 72881234 is about 417.7071466584.

The spelling of 72881234 in words is "seventy-two million, eight hundred eighty-one thousand, two hundred thirty-four".