36978840 has 96 divisors (see below), whose sum is σ = 122288400. Its totient is φ = 9688320.

The previous prime is 36978829. The next prime is 36978853. The reversal of 36978840 is 4887963.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20370 + ... + 22110.

Almost surely, 2^36978840 is an apocalyptic number.

36978840 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36978840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61144200).

36978840 is an abundant number, since it is smaller than the sum of its proper divisors (85309560).

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

36978840 is a wasteful number, since it uses less digits than its factorization.

36978840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1817 (or 1810 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 36978840 is about 6081.0229402626. The cubic root of 36978840 is about 333.1586506961.

The spelling of 36978840 in words is "thirty-six million, nine hundred seventy-eight thousand, eight hundred forty".