250778040 has 64 divisors (see below), whose sum is σ = 759404160. Its totient is φ = 66245760.

The previous prime is 250778029. The next prime is 250778053. The reversal of 250778040 is 40877052.

It is a junction number, because it is equal to n+sod(n) for n = 250777992 and 250778010.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3075 + ... + 22605.

It is an arithmetic number, because the mean of its divisors is an integer number (11865690).

Almost surely, 2^250778040 is an apocalyptic number.

250778040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 250778040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (379702080).

250778040 is an abundant number, since it is smaller than the sum of its proper divisors (508626120).

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

250778040 is a wasteful number, since it uses less digits than its factorization.

250778040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19652 (or 19648 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 250778040 is about 15835.9729729499. The cubic root of 250778040 is about 630.6133608210.

The spelling of 250778040 in words is "two hundred fifty million, seven hundred seventy-eight thousand, forty".