28025460 has 48 divisors (see below), whose sum is σ = 87192000. Its totient is φ = 7473312.

The previous prime is 28025447. The next prime is 28025461. The reversal of 28025460 is 6452082.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28025461) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 25410 + ... + 26489.

It is an arithmetic number, because the mean of its divisors is an integer number (1816500).

Almost surely, 2^28025460 is an apocalyptic number.

28025460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28025460 is an abundant number, since it is smaller than the sum of its proper divisors (59166540).

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

28025460 is a wasteful number, since it uses less digits than its factorization.

28025460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51917 (or 51909 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 28025460 is about 5293.9078193712. The cubic root of 28025460 is about 303.7509068712.

The spelling of 28025460 in words is "twenty-eight million, twenty-five thousand, four hundred sixty".