28460020 has 24 divisors (see below), whose sum is σ = 61828200. Its totient is φ = 10991232.

The previous prime is 28460017. The next prime is 28460041. The reversal of 28460020 is 2006482.

It can be written as a sum of positive squares in 4 ways, for example, as 8464 + 28451556 = 92^2 + 5334^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28459973 and 28460000.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 23955 + ... + 25114.

It is an arithmetic number, because the mean of its divisors is an integer number (2576175).

Almost surely, 2^28460020 is an apocalyptic number.

28460020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28460020 is an abundant number, since it is smaller than the sum of its proper divisors (33368180).

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

28460020 is a wasteful number, since it uses less digits than its factorization.

28460020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49107 (or 49105 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

The square root of 28460020 is about 5334.7933418268. The cubic root of 28460020 is about 305.3128385567.

The spelling of 28460020 in words is "twenty-eight million, four hundred sixty thousand, twenty".