38303990 has 16 divisors (see below), whose sum is σ = 69104448. Its totient is φ = 15286656.

The previous prime is 38303989. The next prime is 38304047. The reversal of 38303990 is 9930383.

38303990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 38303990.

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 7 ways as a sum of consecutive naturals, for example, 494 + ... + 8766.

It is an arithmetic number, because the mean of its divisors is an integer number (4319028).

Almost surely, 2^38303990 is an apocalyptic number.

38303990 is a deficient number, since it is larger than the sum of its proper divisors (30800458).

38303990 is a wasteful number, since it uses less digits than its factorization.

38303990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8743.

The product of its (nonzero) digits is 17496, while the sum is 35.

The square root of 38303990 is about 6189.0217320672. The cubic root of 38303990 is about 337.0916579514.

It can be divided in two parts, 38303 and 990, that added together give a palindrome (39293).

The spelling of 38303990 in words is "thirty-eight million, three hundred three thousand, nine hundred ninety".