72218334 has 16 divisors (see below), whose sum is σ = 144857088. Its totient is φ = 24002712.

The previous prime is 72218309. The next prime is 72218353. The reversal of 72218334 is 43381227.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15262 + ... + 19425.

It is an arithmetic number, because the mean of its divisors is an integer number (9053568).

Almost surely, 2^72218334 is an apocalyptic number.

72218334 is an abundant number, since it is smaller than the sum of its proper divisors (72638754).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

72218334 is a wasteful number, since it uses less digits than its factorization.

72218334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35039.

The product of its digits is 8064, while the sum is 30.

The square root of 72218334 is about 8498.1370899745. The cubic root of 72218334 is about 416.4368523260.

The spelling of 72218334 in words is "seventy-two million, two hundred eighteen thousand, three hundred thirty-four".