28551044 has 24 divisors (see below), whose sum is σ = 51105600. Its totient is φ = 13952480.

The previous prime is 28551023. The next prime is 28551101. The reversal of 28551044 is 44015582.

It is a super-2 number, since 2×28551044² = 1630324226979872, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28550998 and 28551016.

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, 73202 + ... + 73590.

It is an arithmetic number, because the mean of its divisors is an integer number (2129400).

Almost surely, 2^28551044 is an apocalyptic number.

It is an amenable number.

28551044 is a deficient number, since it is larger than the sum of its proper divisors (22554556).

28551044 is a wasteful number, since it uses less digits than its factorization.

28551044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 763 (or 761 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 28551044 is about 5343.3176959638. The cubic root of 28551044 is about 305.6379873148.

The spelling of 28551044 in words is "twenty-eight million, five hundred fifty-one thousand, forty-four".