72277616 has 20 divisors (see below), whose sum is σ = 144556224. Its totient is φ = 34972800.

The previous prime is 72277609. The next prime is 72277627. The reversal of 72277616 is 61677227.

72277616 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 72277616.

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, 72365 + ... + 73356.

Almost surely, 2^72277616 is an apocalyptic number.

It is an amenable number.

72277616 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.

72277616 is a wasteful number, since it uses less digits than its factorization.

72277616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145760 (or 145754 counting only the distinct ones).

The product of its digits is 49392, while the sum is 38.

The square root of 72277616 is about 8501.6243153882. The cubic root of 72277616 is about 416.5507682629.

The spelling of 72277616 in words is "seventy-two million, two hundred seventy-seven thousand, six hundred sixteen".