38385690 has 32 divisors (see below), whose sum is σ = 105287040. Its totient is φ = 8773824.

The previous prime is 38385671. The next prime is 38385701. The reversal of 38385690 is 9658383.

It is a super-2 number, since 2×38385690² = 2946922393552200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

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, 91185 + ... + 91604.

It is an arithmetic number, because the mean of its divisors is an integer number (3290220).

Almost surely, 2^38385690 is an apocalyptic number.

38385690 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38385690 is an abundant number, since it is smaller than the sum of its proper divisors (66901350).

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

38385690 is a wasteful number, since it uses less digits than its factorization.

38385690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182806.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 38385690 is about 6195.6186131814. The cubic root of 38385690 is about 337.3311528533.

The spelling of 38385690 in words is "thirty-eight million, three hundred eighty-five thousand, six hundred ninety".