8720237672 has 16 divisors (see below), whose sum is σ = 16351929060. Its totient is φ = 4359723264.

The previous prime is 8720237653. The next prime is 8720237693. The reversal of 8720237672 is 2767320278.

It can be written as a sum of positive squares in 2 ways, for example, as 6048795076 + 2671442596 = 77774^2 + 51686^2 .

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, 57968 + ... + 144224.

Almost surely, 2^8720237672 is an apocalyptic number.

It is an amenable number.

8720237672 is a deficient number, since it is larger than the sum of its proper divisors (7631691388).

8720237672 is a wasteful number, since it uses less digits than its factorization.

8720237672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98900 (or 98896 counting only the distinct ones).

The product of its (nonzero) digits is 395136, while the sum is 44.

The square root of 8720237672 is about 93382.2128244989. The cubic root of 8720237672 is about 2058.3036331527.

The spelling of 8720237672 in words is "eight billion, seven hundred twenty million, two hundred thirty-seven thousand, six hundred seventy-two".