87938136 has 240 divisors, whose sum is σ = 294944760. Its totient is φ = 24261120.

The previous prime is 87938129. The next prime is 87938171. The reversal of 87938136 is 63183978.

It is a happy number.

Its product of digits (217728) is a multiple of the sum of its prime factors (128).

It is a junction number, because it is equal to n+sod(n) for n = 87938091 and 87938100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 1204596 + ... + 1204668.

Almost surely, 2^87938136 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 87938136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147472380).

87938136 is an abundant number, since it is smaller than the sum of its proper divisors (207006624).

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

87938136 is a wasteful number, since it uses less digits than its factorization.

87938136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128 (or 102 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 87938136 is about 9377.5335776525. The cubic root of 87938136 is about 444.6917631461.

The spelling of 87938136 in words is "eighty-seven million, nine hundred thirty-eight thousand, one hundred thirty-six".