37997898 has 32 divisors (see below), whose sum is σ = 78829632. Its totient is φ = 12201600.

The previous prime is 37997881. The next prime is 37997899. The reversal of 37997898 is 89879973.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (37997899) 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, 19488 + ... + 21348.

It is an arithmetic number, because the mean of its divisors is an integer number (2463426).

Almost surely, 2^37997898 is an apocalyptic number.

37997898 is an abundant number, since it is smaller than the sum of its proper divisors (40831734).

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

37997898 is a wasteful number, since it uses less digits than its factorization.

37997898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1990.

The product of its digits is 6858432, while the sum is 60.

The square root of 37997898 is about 6164.2435058975. The cubic root of 37997898 is about 336.1913415548.

The spelling of 37997898 in words is "thirty-seven million, nine hundred ninety-seven thousand, eight hundred ninety-eight".