72943518 has 16 divisors (see below), whose sum is σ = 146417040. Its totient is φ = 24226176.

The previous prime is 72943487. The next prime is 72943531. The reversal of 72943518 is 81534927.

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 7 ways as a sum of consecutive naturals, for example, 20283 + ... + 23606.

It is an arithmetic number, because the mean of its divisors is an integer number (9151065).

Almost surely, 2^72943518 is an apocalyptic number.

72943518 is an abundant number, since it is smaller than the sum of its proper divisors (73473522).

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

72943518 is a wasteful number, since it uses less digits than its factorization.

72943518 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44171.

The product of its digits is 60480, while the sum is 39.

The square root of 72943518 is about 8540.6977466715. The cubic root of 72943518 is about 417.8261030427.

The spelling of 72943518 in words is "seventy-two million, nine hundred forty-three thousand, five hundred eighteen".