28939296 has 48 divisors (see below), whose sum is σ = 76331808. Its totient is φ = 9600000.

The previous prime is 28939259. The next prime is 28939307. The reversal of 28939296 is 69293982.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23496 + ... + 24696.

It is an arithmetic number, because the mean of its divisors is an integer number (1590246).

Almost surely, 2^28939296 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 28939296, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38165904).

28939296 is an abundant number, since it is smaller than the sum of its proper divisors (47392512).

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

28939296 is a wasteful number, since it uses less digits than its factorization.

28939296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1465 (or 1457 counting only the distinct ones).

The product of its digits is 419904, while the sum is 48.

The square root of 28939296 is about 5379.5256296443. The cubic root of 28939296 is about 307.0171627947.

The spelling of 28939296 in words is "twenty-eight million, nine hundred thirty-nine thousand, two hundred ninety-six".