28259616 has 96 divisors (see below), whose sum is σ = 92510208. Its totient is φ = 7338240.

The previous prime is 28259603. The next prime is 28259677. The reversal of 28259616 is 61695282.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5481 + ... + 9303.

It is an arithmetic number, because the mean of its divisors is an integer number (963648).

Almost surely, 2^28259616 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 28259616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46255104).

28259616 is an abundant number, since it is smaller than the sum of its proper divisors (64250592).

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

28259616 is a wasteful number, since it uses less digits than its factorization.

28259616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3854 (or 3846 counting only the distinct ones).

The product of its digits is 51840, while the sum is 39.

The square root of 28259616 is about 5315.9774265886. The cubic root of 28259616 is about 304.5945198521.

The spelling of 28259616 in words is "twenty-eight million, two hundred fifty-nine thousand, six hundred sixteen".