28079898 has 32 divisors (see below), whose sum is σ = 70018560. Its totient is φ = 7293360.

The previous prime is 28079897. The next prime is 28079899. The reversal of 28079898 is 89897082.

It is an interprime number because it is at equal distance from previous prime (28079897) and next prime (28079899).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28079898.

It is not an unprimeable number, because it can be changed into a prime (28079897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29928 + ... + 30851.

It is an arithmetic number, because the mean of its divisors is an integer number (2188080).

Almost surely, 2^28079898 is an apocalyptic number.

28079898 is an abundant number, since it is smaller than the sum of its proper divisors (41938662).

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

28079898 is a wasteful number, since it uses less digits than its factorization.

28079898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60802.

The product of its (nonzero) digits is 580608, while the sum is 51.

The square root of 28079898 is about 5299.0468954332. The cubic root of 28079898 is about 303.9474531176.

The spelling of 28079898 in words is "twenty-eight million, seventy-nine thousand, eight hundred ninety-eight".