28232460 has 72 divisors (see below), whose sum is σ = 86953776. Its totient is φ = 7413120.

The previous prime is 28232419. The next prime is 28232471. The reversal of 28232460 is 6423282.

28232460 is a `hidden beast` number, since 282 + 324 + 60 = 666.

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 23 ways as a sum of consecutive naturals, for example, 10890 + ... + 13230.

Almost surely, 2^28232460 is an apocalyptic number.

28232460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28232460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43476888).

28232460 is an abundant number, since it is smaller than the sum of its proper divisors (58721316).

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

28232460 is a wasteful number, since it uses less digits than its factorization.

28232460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2423 (or 2418 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 28232460 is about 5313.4226257658. The cubic root of 28232460 is about 304.4969221623.

The spelling of 28232460 in words is "twenty-eight million, two hundred thirty-two thousand, four hundred sixty".