72942918 has 8 divisors (see below), whose sum is σ = 145885848. Its totient is φ = 24314304.

The previous prime is 72942899. The next prime is 72942941. The reversal of 72942918 is 81924927.

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

72942918 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 72942918.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6078571 + ... + 6078582.

It is an arithmetic number, because the mean of its divisors is an integer number (18235731).

Almost surely, 2^72942918 is an apocalyptic number.

72942918 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

72942918 is a wasteful number, since it uses less digits than its factorization.

72942918 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12157158.

The product of its digits is 72576, while the sum is 42.

The square root of 72942918 is about 8540.6626206636. The cubic root of 72942918 is about 417.8249574241.

Subtracting 72942918 from its reverse (81924927), we obtain a square (8982009 = 2997²).

The spelling of 72942918 in words is "seventy-two million, nine hundred forty-two thousand, nine hundred eighteen".