38505590 has 16 divisors (see below), whose sum is σ = 72958320. Its totient is φ = 14591520.

The previous prime is 38505587. The next prime is 38505617. The reversal of 38505590 is 9550583.

38505590 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×38505590² = 2965360922496200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 38505590.

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, 101141 + ... + 101520.

It is an arithmetic number, because the mean of its divisors is an integer number (4559895).

Almost surely, 2^38505590 is an apocalyptic number.

38505590 is a deficient number, since it is larger than the sum of its proper divisors (34452730).

38505590 is a wasteful number, since it uses less digits than its factorization.

38505590 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202687.

The product of its (nonzero) digits is 27000, while the sum is 35.

The square root of 38505590 is about 6205.2872616826. The cubic root of 38505590 is about 337.6820124776.

The spelling of 38505590 in words is "thirty-eight million, five hundred five thousand, five hundred ninety".