72208478 has 8 divisors (see below), whose sum is σ = 108348840. Its totient is φ = 36092200.

The previous prime is 72208457. The next prime is 72208489. The reversal of 72208478 is 87480227.

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

It is a congruent number.

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, 8108 + ... + 14496.

It is an arithmetic number, because the mean of its divisors is an integer number (13543605).

Almost surely, 2^72208478 is an apocalyptic number.

72208478 is a deficient number, since it is larger than the sum of its proper divisors (36140362).

72208478 is a wasteful number, since it uses less digits than its factorization.

72208478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12042.

The product of its (nonzero) digits is 50176, while the sum is 38.

The square root of 72208478 is about 8497.5571783896. The cubic root of 72208478 is about 416.4179070521.

The spelling of 72208478 in words is "seventy-two million, two hundred eight thousand, four hundred seventy-eight".