900028 has 12 divisors (see below), whose sum is σ = 1583680. Its totient is φ = 447552.

The previous prime is 900019. The next prime is 900037. The reversal of 900028 is 820009.

It is an interprime number because it is at equal distance from previous prime (900019) and next prime (900037).

It is a hoax number, since the sum of its digits (19) 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 = 899978 and 900014.

It is a congruent number.

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, 388 + ... + 1396.

2⁹⁰⁰⁰²⁸ is an apocalyptic number.

It is an amenable number.

900028 is a deficient number, since it is larger than the sum of its proper divisors (683652).

900028 is a wasteful number, since it uses less digits than its factorization.

900028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1236 (or 1234 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 900028 is about 948.6980552315. The cubic root of 900028 is about 96.5499396984.

Subtracting from 900028 its sum of digits (19), we obtain a palindrome (900009).

The spelling of 900028 in words is "nine hundred thousand, twenty-eight".