38725290 has 40 divisors (see below), whose sum is σ = 104130180. Its totient is φ = 10326528.

The previous prime is 38725289. The next prime is 38725331. The reversal of 38725290 is 9252783.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 34327881 + 4397409 = 5859^2 + 2097^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 23095 + ... + 24714.

Almost surely, 2^38725290 is an apocalyptic number.

38725290 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

38725290 is an abundant number, since it is smaller than the sum of its proper divisors (65404890).

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

38725290 is a wasteful number, since it uses less digits than its factorization.

38725290 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47828 (or 47819 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 38725290 is about 6222.9647275234. The cubic root of 38725290 is about 338.3230283665.

The spelling of 38725290 in words is "thirty-eight million, seven hundred twenty-five thousand, two hundred ninety".