250666340 has 12 divisors (see below), whose sum is σ = 526399356. Its totient is φ = 100266528.

The previous prime is 250666337. The next prime is 250666387. The reversal of 250666340 is 43666052.

It can be written as a sum of positive squares in 2 ways, for example, as 66846976 + 183819364 = 8176^2 + 13558^2 .

It is a super-2 number, since 2×250666340² = 125667228017991200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 250666297 and 250666306.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6266639 + ... + 6266678.

It is an arithmetic number, because the mean of its divisors is an integer number (43866613).

Almost surely, 2^250666340 is an apocalyptic number.

250666340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

250666340 is an abundant number, since it is smaller than the sum of its proper divisors (275733016).

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

250666340 is a wasteful number, since it uses less digits than its factorization.

250666340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12533326 (or 12533324 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 250666340 is about 15832.4457996862. The cubic root of 250666340 is about 630.5197189518.

The spelling of 250666340 in words is "two hundred fifty million, six hundred sixty-six thousand, three hundred forty".