86137928 has 16 divisors (see below), whose sum is σ = 162689580. Its totient is φ = 42754048.

The previous prime is 86137907. The next prime is 86137949. The reversal of 86137928 is 82973168.

It is an interprime number because it is at equal distance from previous prime (86137907) and next prime (86137949).

It can be written as a sum of positive squares in 2 ways, for example, as 86081284 + 56644 = 9278^2 + 238^2 .

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, 38201 + ... + 40392.

Almost surely, 2^86137928 is an apocalyptic number.

It is an amenable number.

86137928 is a deficient number, since it is larger than the sum of its proper divisors (76551652).

86137928 is a wasteful number, since it uses less digits than its factorization.

86137928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78736 (or 78732 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 86137928 is about 9281.0520955331. The cubic root of 86137928 is about 441.6363449616.

The spelling of 86137928 in words is "eighty-six million, one hundred thirty-seven thousand, nine hundred twenty-eight".