36139788 has 36 divisors (see below), whose sum is σ = 91535808. Its totient is φ = 12022560.

The previous prime is 36139759. The next prime is 36139811. The reversal of 36139788 is 88793163.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 35170 + ... + 36182.

Almost surely, 2^36139788 is an apocalyptic number.

It is an amenable number.

36139788 is an abundant number, since it is smaller than the sum of its proper divisors (55396020).

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

36139788 is a wasteful number, since it uses less digits than its factorization.

36139788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2014 (or 2009 counting only the distinct ones).

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

The square root of 36139788 is about 6011.6377136351. The cubic root of 36139788 is about 330.6195523585.

The spelling of 36139788 in words is "thirty-six million, one hundred thirty-nine thousand, seven hundred eighty-eight".