36897990 has 64 divisors (see below), whose sum is σ = 95178240. Its totient is φ = 9121280.

The previous prime is 36897989. The next prime is 36897997. The reversal of 36897990 is 9979863.

It is a super-2 number, since 2×36897990² = 2722923332080200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36897997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35701 + ... + 36719.

It is an arithmetic number, because the mean of its divisors is an integer number (1487160).

Almost surely, 2^36897990 is an apocalyptic number.

36897990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 36897990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47589120).

36897990 is an abundant number, since it is smaller than the sum of its proper divisors (58280250).

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

36897990 is a wasteful number, since it uses less digits than its factorization.

36897990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1117.

The product of its (nonzero) digits is 734832, while the sum is 51.

The square root of 36897990 is about 6074.3715724345. The cubic root of 36897990 is about 332.9156691106.

The spelling of 36897990 in words is "thirty-six million, eight hundred ninety-seven thousand, nine hundred ninety".