36656820 has 48 divisors (see below), whose sum is σ = 114045120. Its totient is φ = 9775008.

The previous prime is 36656771. The next prime is 36656821. The reversal of 36656820 is 2865663.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36656821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33402 + ... + 34481.

It is an arithmetic number, because the mean of its divisors is an integer number (2375940).

Almost surely, 2^36656820 is an apocalyptic number.

36656820 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

36656820 is an abundant number, since it is smaller than the sum of its proper divisors (77388300).

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

36656820 is a wasteful number, since it uses less digits than its factorization.

36656820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67901 (or 67893 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 36656820 is about 6054.4875918611. The cubic root of 36656820 is about 332.1887565526.

The spelling of 36656820 in words is "thirty-six million, six hundred fifty-six thousand, eight hundred twenty".