37689990 has 64 divisors (see below), whose sum is σ = 98062272. Its totient is φ = 9216000.

The previous prime is 37689983. The next prime is 37690007. The reversal of 37689990 is 9998673.

37689990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 93790 + ... + 94190.

It is an arithmetic number, because the mean of its divisors is an integer number (1532223).

Almost surely, 2^37689990 is an apocalyptic number.

37689990 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 37689990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49031136).

37689990 is an abundant number, since it is smaller than the sum of its proper divisors (60372282).

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

37689990 is a wasteful number, since it uses less digits than its factorization.

37689990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665.

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

The square root of 37689990 is about 6139.2173768323. The cubic root of 37689990 is about 335.2807922755.

The spelling of 37689990 in words is "thirty-seven million, six hundred eighty-nine thousand, nine hundred ninety".