36138880 has 32 divisors (see below), whose sum is σ = 86396040. Its totient is φ = 14455296.

The previous prime is 36138863. The next prime is 36138881. The reversal of 36138880 is 8883163.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36138881) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27594 + ... + 28873.

Almost surely, 2^36138880 is an apocalyptic number.

It is an amenable number.

36138880 is an abundant number, since it is smaller than the sum of its proper divisors (50257160).

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

36138880 is an equidigital number, since it uses as much as digits as its factorization.

36138880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56486 (or 56474 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 36138880 is about 6011.5621929745. The cubic root of 36138880 is about 330.6167834337.

The spelling of 36138880 in words is "thirty-six million, one hundred thirty-eight thousand, eight hundred eighty".