38490090 has 32 divisors (see below), whose sum is σ = 93298176. Its totient is φ = 10161600.

The previous prime is 38490083. The next prime is 38490107. The reversal of 38490090 is 9009483.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3322 + ... + 9381.

It is an arithmetic number, because the mean of its divisors is an integer number (2915568).

Almost surely, 2^38490090 is an apocalyptic number.

38490090 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38490090 is an abundant number, since it is smaller than the sum of its proper divisors (54808086).

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

38490090 is a wasteful number, since it uses less digits than its factorization.

38490090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12814.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 38490090 is about 6204.0382010429. The cubic root of 38490090 is about 337.6366963416.

The spelling of 38490090 in words is "thirty-eight million, four hundred ninety thousand, ninety".