38395290 has 16 divisors (see below), whose sum is σ = 92148768. Its totient is φ = 10238736.

The previous prime is 38395289. The next prime is 38395297. The reversal of 38395290 is 9259383.

It is not an unprimeable number, because it can be changed into a prime (38395297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 639892 + ... + 639951.

It is an arithmetic number, because the mean of its divisors is an integer number (5759298).

Almost surely, 2^38395290 is an apocalyptic number.

38395290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38395290 is an abundant number, since it is smaller than the sum of its proper divisors (53753478).

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

38395290 is a wasteful number, since it uses less digits than its factorization.

38395290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1279853.

The product of its (nonzero) digits is 58320, while the sum is 39.

The square root of 38395290 is about 6196.3933057868. The cubic root of 38395290 is about 337.3592719183.

The spelling of 38395290 in words is "thirty-eight million, three hundred ninety-five thousand, two hundred ninety".