36821988 has 72 divisors (see below), whose sum is σ = 111017088. Its totient is φ = 10061568.

The previous prime is 36821987. The next prime is 36821989. The reversal of 36821988 is 88912863.

It is an interprime number because it is at equal distance from previous prime (36821987) and next prime (36821989).

It is not an unprimeable number, because it can be changed into a prime (36821987) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2620 + ... + 8972.

It is an arithmetic number, because the mean of its divisors is an integer number (1541904).

Almost surely, 2^36821988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 36821988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55508544).

36821988 is an abundant number, since it is smaller than the sum of its proper divisors (74195100).

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

36821988 is a wasteful number, since it uses less digits than its factorization.

36821988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6393 (or 6388 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 36821988 is about 6068.1123918398. The cubic root of 36821988 is about 332.6869335344.

The spelling of 36821988 in words is "thirty-six million, eight hundred twenty-one thousand, nine hundred eighty-eight".