28146460 has 12 divisors (see below), whose sum is σ = 59107608. Its totient is φ = 11258576.

The previous prime is 28146439. The next prime is 28146473. The reversal of 28146460 is 6464182.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 703642 + ... + 703681.

It is an arithmetic number, because the mean of its divisors is an integer number (4925634).

Almost surely, 2^28146460 is an apocalyptic number.

28146460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28146460 is an abundant number, since it is smaller than the sum of its proper divisors (30961148).

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

28146460 is a wasteful number, since it uses less digits than its factorization.

28146460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407332 (or 1407330 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 31.

The square root of 28146460 is about 5305.3237412999. The cubic root of 28146460 is about 304.1874277024.

The spelling of 28146460 in words is "twenty-eight million, one hundred forty-six thousand, four hundred sixty".