250928138 has 8 divisors (see below), whose sum is σ = 377148000. Its totient is φ = 125212140.

The previous prime is 250928131. The next prime is 250928141. The reversal of 250928138 is 831829052.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (250928131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124718 + ... + 126713.

It is an arithmetic number, because the mean of its divisors is an integer number (47143500).

Almost surely, 2^250928138 is an apocalyptic number.

250928138 is a deficient number, since it is larger than the sum of its proper divisors (126219862).

250928138 is a wasteful number, since it uses less digits than its factorization.

250928138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251932.

The product of its (nonzero) digits is 34560, while the sum is 38.

The square root of 250928138 is about 15840.7114107921. The cubic root of 250928138 is about 630.7391492488.

The spelling of 250928138 in words is "two hundred fifty million, nine hundred twenty-eight thousand, one hundred thirty-eight".