28090026 has 24 divisors (see below), whose sum is σ = 60973380. Its totient is φ = 9346176.

The previous prime is 28090021. The next prime is 28090031. The reversal of 28090026 is 62009082.

It is an interprime number because it is at equal distance from previous prime (28090021) and next prime (28090031).

It can be written as a sum of positive squares in 2 ways, for example, as 27092025 + 998001 = 5205^2 + 999^2 .

It is not an unprimeable number, because it can be changed into a prime (28090021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12130 + ... + 14258.

Almost surely, 2^28090026 is an apocalyptic number.

28090026 is an abundant number, since it is smaller than the sum of its proper divisors (32883354).

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

28090026 is a wasteful number, since it uses less digits than its factorization.

28090026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2870 (or 2867 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 28090026 is about 5300.0024528296. The cubic root of 28090026 is about 303.9839918279.

The spelling of 28090026 in words is "twenty-eight million, ninety thousand, twenty-six".