28310898 has 64 divisors (see below), whose sum is σ = 71165952. Its totient is φ = 7294080.

The previous prime is 28310881. The next prime is 28310903. The reversal of 28310898 is 89801382.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107515 + ... + 107777.

It is an arithmetic number, because the mean of its divisors is an integer number (1111968).

Almost surely, 2^28310898 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28310898, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35582976).

28310898 is an abundant number, since it is smaller than the sum of its proper divisors (42855054).

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

28310898 is a wasteful number, since it uses less digits than its factorization.

28310898 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 519.

The product of its (nonzero) digits is 27648, while the sum is 39.

The square root of 28310898 is about 5320.7986242668. The cubic root of 28310898 is about 304.7786551348.

The spelling of 28310898 in words is "twenty-eight million, three hundred ten thousand, eight hundred ninety-eight".