72291698 has 8 divisors (see below), whose sum is σ = 108501120. Its totient is φ = 36124660.

The previous prime is 72291679. The next prime is 72291707. The reversal of 72291698 is 89619227.

It is a happy number.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5918 + ... + 13401.

It is an arithmetic number, because the mean of its divisors is an integer number (13562640).

Almost surely, 2^72291698 is an apocalyptic number.

72291698 is a deficient number, since it is larger than the sum of its proper divisors (36209422).

72291698 is a wasteful number, since it uses less digits than its factorization.

72291698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21192.

The product of its digits is 108864, while the sum is 44.

The square root of 72291698 is about 8502.4524697290. The cubic root of 72291698 is about 416.5778189937.

The spelling of 72291698 in words is "seventy-two million, two hundred ninety-one thousand, six hundred ninety-eight".