38981136 has 160 divisors (see below), whose sum is σ = 116563968. Its totient is φ = 11151360.

The previous prime is 38981101. The next prime is 38981143. The reversal of 38981136 is 63118983.

It is a junction number, because it is equal to n+sod(n) for n = 38981094 and 38981103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 581775 + ... + 581841.

Almost surely, 2^38981136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38981136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (58281984).

38981136 is an abundant number, since it is smaller than the sum of its proper divisors (77582832).

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

38981136 is a wasteful number, since it uses less digits than its factorization.

38981136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149 (or 143 counting only the distinct ones).

The product of its digits is 31104, while the sum is 39.

The square root of 38981136 is about 6243.4874869739. The cubic root of 38981136 is about 339.0664587205.

The spelling of 38981136 in words is "thirty-eight million, nine hundred eighty-one thousand, one hundred thirty-six".