38049990 has 32 divisors (see below), whose sum is σ = 99622656. Its totient is φ = 9224160.

The previous prime is 38049971. The next prime is 38049997. The reversal of 38049990 is 9994083.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38049997) 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, 57322 + ... + 57981.

It is an arithmetic number, because the mean of its divisors is an integer number (3113208).

Almost surely, 2^38049990 is an apocalyptic number.

38049990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38049990 is an abundant number, since it is smaller than the sum of its proper divisors (61572666).

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

38049990 is a wasteful number, since it uses less digits than its factorization.

38049990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115324.

The product of its (nonzero) digits is 69984, while the sum is 42.

The square root of 38049990 is about 6168.4673947424. The cubic root of 38049990 is about 336.3449016504.

The spelling of 38049990 in words is "thirty-eight million, forty-nine thousand, nine hundred ninety".