72943078 has 16 divisors (see below), whose sum is σ = 118097280. Its totient is φ = 33590016.

The previous prime is 72943067. The next prime is 72943081. The reversal of 72943078 is 87034927.

It is a super-2 number, since 2×72943078² = 10641385256228168, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 72943078.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9526 + ... + 15382.

It is an arithmetic number, because the mean of its divisors is an integer number (7381080).

Almost surely, 2^72943078 is an apocalyptic number.

72943078 is a deficient number, since it is larger than the sum of its proper divisors (45154202).

72943078 is a wasteful number, since it uses less digits than its factorization.

72943078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6351.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 72943078 is about 8540.6719876132. The cubic root of 72943078 is about 417.8252629230.

The spelling of 72943078 in words is "seventy-two million, nine hundred forty-three thousand, seventy-eight".