250008990 has 96 divisors (see below), whose sum is σ = 753822720. Its totient is φ = 51944640.

The previous prime is 250008977. The next prime is 250009007. The reversal of 250008990 is 99800052.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20491 + ... + 30329.

It is an arithmetic number, because the mean of its divisors is an integer number (7852320).

Almost surely, 2^250008990 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 250008990, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (376911360).

250008990 is an abundant number, since it is smaller than the sum of its proper divisors (503813730).

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

250008990 is a wasteful number, since it uses less digits than its factorization.

250008990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9878 (or 9867 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The square root of 250008990 is about 15811.6725870478. The cubic root of 250008990 is about 629.9680759838.

The spelling of 250008990 in words is "two hundred fifty million, eight thousand, nine hundred ninety".