28821462 has 16 divisors (see below), whose sum is σ = 57943920. Its totient is φ = 9556992.

The previous prime is 28821451. The next prime is 28821479. The reversal of 28821462 is 26412882.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11287 + ... + 13602.

It is an arithmetic number, because the mean of its divisors is an integer number (3621495).

Almost surely, 2^28821462 is an apocalyptic number.

28821462 is an abundant number, since it is smaller than the sum of its proper divisors (29122458).

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

28821462 is a wasteful number, since it uses less digits than its factorization.

28821462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25087.

The product of its digits is 12288, while the sum is 33.

The square root of 28821462 is about 5368.5623773968. The cubic root of 28821462 is about 306.5998954082.

The spelling of 28821462 in words is "twenty-eight million, eight hundred twenty-one thousand, four hundred sixty-two".