28478592 has 96 divisors (see below), whose sum is σ = 83538000. Its totient is φ = 9309696.

The previous prime is 28478591. The next prime is 28478603. The reversal of 28478592 is 29587482.

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

It is a super-2 number, since 2×28478592² = 1622060404604928, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28478591) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67759 + ... + 68177.

Almost surely, 2^28478592 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 28478592, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41769000).

28478592 is an abundant number, since it is smaller than the sum of its proper divisors (55059408).

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

28478592 is a wasteful number, since it uses less digits than its factorization.

28478592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498 (or 483 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 28478592 is about 5336.5337064428. The cubic root of 28478592 is about 305.3792362270.

The spelling of 28478592 in words is "twenty-eight million, four hundred seventy-eight thousand, five hundred ninety-two".