72047854 has 4 divisors (see below), whose sum is σ = 108071784. Its totient is φ = 36023926.

The previous prime is 72047839. The next prime is 72047873. The reversal of 72047854 is 45874027.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18011962 + ... + 18011965.

It is an arithmetic number, because the mean of its divisors is an integer number (27017946).

Almost surely, 2^72047854 is an apocalyptic number.

72047854 is a deficient number, since it is larger than the sum of its proper divisors (36023930).

72047854 is a wasteful number, since it uses less digits than its factorization.

72047854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36023929.

The product of its (nonzero) digits is 62720, while the sum is 37.

The square root of 72047854 is about 8488.1007298453. The cubic root of 72047854 is about 416.1089111721.

The spelling of 72047854 in words is "seventy-two million, forty-seven thousand, eight hundred fifty-four".