38090390 has 32 divisors (see below), whose sum is σ = 75841920. Its totient is φ = 13682304.

The previous prime is 38090363. The next prime is 38090399. The reversal of 38090390 is 9309083.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38090399) 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, 851 + ... + 8769.

It is an arithmetic number, because the mean of its divisors is an integer number (2370060).

Almost surely, 2^38090390 is an apocalyptic number.

38090390 is a deficient number, since it is larger than the sum of its proper divisors (37751530).

38090390 is a wasteful number, since it uses less digits than its factorization.

38090390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7976.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 38090390 is about 6171.7412453861. The cubic root of 38090390 is about 336.4638988579.

The spelling of 38090390 in words is "thirty-eight million, ninety thousand, three hundred ninety".