28630896 has 160 divisors (see below), whose sum is σ = 90470400. Its totient is φ = 7789824.

The previous prime is 28630867. The next prime is 28630939. The reversal of 28630896 is 69803682.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent 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, 609145 + ... + 609191.

It is an arithmetic number, because the mean of its divisors is an integer number (565440).

Almost surely, 2^28630896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28630896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45235200).

28630896 is an abundant number, since it is smaller than the sum of its proper divisors (61839504).

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

28630896 is a wasteful number, since it uses less digits than its factorization.

28630896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116 (or 96 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 42.

The square root of 28630896 is about 5350.7846153625. The cubic root of 28630896 is about 305.9226597656.

The spelling of 28630896 in words is "twenty-eight million, six hundred thirty thousand, eight hundred ninety-six".