250000028 has 18 divisors (see below), whose sum is σ = 464751336. Its totient is φ = 117646528.

The previous prime is 250000019. The next prime is 250000073. The reversal of 250000028 is 820000052.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a junction number, because it is equal to n+sod(n) for n = 249999970 and 250000015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 106976 + ... + 109287.

Almost surely, 2^250000028 is an apocalyptic number.

It is an amenable number.

250000028 is a deficient number, since it is larger than the sum of its proper divisors (214751308).

250000028 is a wasteful number, since it uses less digits than its factorization.

250000028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216301 (or 216282 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 250000028 is about 15811.3891862796. The cubic root of 250000028 is about 629.9605484660.

The spelling of 250000028 in words is "two hundred fifty million, twenty-eight", and thus it is an aban number.