38085990 has 32 divisors (see below), whose sum is σ = 94560480. Its totient is φ = 9805824.

The previous prime is 38085977. The next prime is 38085991. The reversal of 38085990 is 9958083.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38085991) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21019 + ... + 22758.

It is an arithmetic number, because the mean of its divisors is an integer number (2955015).

Almost surely, 2^38085990 is an apocalyptic number.

38085990 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38085990 is an abundant number, since it is smaller than the sum of its proper divisors (56474490).

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

38085990 is a wasteful number, since it uses less digits than its factorization.

38085990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43816.

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 38085990 is about 6171.3847716700. The cubic root of 38085990 is about 336.4509428502.

The spelling of 38085990 in words is "thirty-eight million, eighty-five thousand, nine hundred ninety".