28479782 has 16 divisors (see below), whose sum is σ = 43773072. Its totient is φ = 13893120.

The previous prime is 28479761. The next prime is 28479797. The reversal of 28479782 is 28797482.

It is a happy number.

It is a super-2 number, since 2×28479782² = 1622195965535048, which contains 22 as substring.

It is a nialpdrome in base 12.

It is a congruent number.

It is an unprimeable number.

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, 13157 + ... + 15167.

It is an arithmetic number, because the mean of its divisors is an integer number (2735817).

Almost surely, 2^28479782 is an apocalyptic number.

28479782 is a deficient number, since it is larger than the sum of its proper divisors (15293290).

28479782 is a wasteful number, since it uses less digits than its factorization.

28479782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2183.

The product of its digits is 451584, while the sum is 47.

The square root of 28479782 is about 5336.6452008729. The cubic root of 28479782 is about 305.3834896703.

The spelling of 28479782 in words is "twenty-eight million, four hundred seventy-nine thousand, seven hundred eighty-two".