38502138 has 16 divisors (see below), whose sum is σ = 80352576. Its totient is φ = 12276000.

The previous prime is 38502119. The next prime is 38502143. The reversal of 38502138 is 83120583.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 139363 + ... + 139638.

It is an arithmetic number, because the mean of its divisors is an integer number (5022036).

Almost surely, 2^38502138 is an apocalyptic number.

38502138 is an abundant number, since it is smaller than the sum of its proper divisors (41850438).

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

38502138 is a wasteful number, since it uses less digits than its factorization.

38502138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279029.

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 38502138 is about 6205.0091055534. The cubic root of 38502138 is about 337.6719211883.

The spelling of 38502138 in words is "thirty-eight million, five hundred two thousand, one hundred thirty-eight".