28460840 has 32 divisors (see below), whose sum is σ = 65530080. Its totient is φ = 11118912.

The previous prime is 28460819. The next prime is 28460843. The reversal of 28460840 is 4806482.

It is a junction number, because it is equal to n+sod(n) for n = 28460797 and 28460806.

It is not an unprimeable number, because it can be changed into a prime (28460843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6554 + ... + 9993.

It is an arithmetic number, because the mean of its divisors is an integer number (2047815).

Almost surely, 2^28460840 is an apocalyptic number.

28460840 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28460840 is an abundant number, since it is smaller than the sum of its proper divisors (37069240).

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

28460840 is a wasteful number, since it uses less digits than its factorization.

28460840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16601 (or 16597 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 28460840 is about 5334.8701952344. The cubic root of 28460840 is about 305.3157707884.

The spelling of 28460840 in words is "twenty-eight million, four hundred sixty thousand, eight hundred forty".