72258122 has 4 divisors (see below), whose sum is σ = 108387186. Its totient is φ = 36129060.

The previous prime is 72258119. The next prime is 72258161. The reversal of 72258122 is 22185227.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 69538921 + 2719201 = 8339^2 + 1649^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18064529 + ... + 18064532.

Almost surely, 2^72258122 is an apocalyptic number.

72258122 is a deficient number, since it is larger than the sum of its proper divisors (36129064).

72258122 is a wasteful number, since it uses less digits than its factorization.

72258122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36129063.

The product of its digits is 4480, while the sum is 29.

The square root of 72258122 is about 8500.4777512796. The cubic root of 72258122 is about 416.5133155850.

The spelling of 72258122 in words is "seventy-two million, two hundred fifty-eight thousand, one hundred twenty-two".