28479276 has 120 divisors (see below), whose sum is σ = 88223520. Its totient is φ = 7838208.

The previous prime is 28479259. The next prime is 28479281. The reversal of 28479276 is 67297482.

It is a super-2 number, since 2×28479276² = 1622138322968352, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 65556 + ... + 65988.

It is an arithmetic number, because the mean of its divisors is an integer number (735196).

Almost surely, 2^28479276 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 28479276, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44111760).

28479276 is an abundant number, since it is smaller than the sum of its proper divisors (59744244).

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

28479276 is a wasteful number, since it uses less digits than its factorization.

28479276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 485 (or 474 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 28479276 is about 5336.5977926016. The cubic root of 28479276 is about 305.3816810778.

The spelling of 28479276 in words is "twenty-eight million, four hundred seventy-nine thousand, two hundred seventy-six".