250530138 has 16 divisors (see below), whose sum is σ = 556733760. Its totient is φ = 83510028.

The previous prime is 250530097. The next prime is 250530149. The reversal of 250530138 is 831035052.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 2319670 + ... + 2319777.

It is an arithmetic number, because the mean of its divisors is an integer number (34795860).

Almost surely, 2^250530138 is an apocalyptic number.

250530138 is an abundant number, since it is smaller than the sum of its proper divisors (306203622).

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

250530138 is a wasteful number, since it uses less digits than its factorization.

250530138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4639458 (or 4639452 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 250530138 is about 15828.1438583303. The cubic root of 250530138 is about 630.4054985826.

The spelling of 250530138 in words is "two hundred fifty million, five hundred thirty thousand, one hundred thirty-eight".