28977044 has 24 divisors (see below), whose sum is σ = 53887680. Its totient is φ = 13586816.

The previous prime is 28977041. The next prime is 28977049. The reversal of 28977044 is 44077982.

It is a junction number, because it is equal to n+sod(n) for n = 28976992 and 28977010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28977041) by changing a digit.

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, 23819 + ... + 25005.

It is an arithmetic number, because the mean of its divisors is an integer number (2245320).

Almost surely, 2^28977044 is an apocalyptic number.

It is an amenable number.

28977044 is a deficient number, since it is larger than the sum of its proper divisors (24910636).

28977044 is a wasteful number, since it uses less digits than its factorization.

28977044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1567 (or 1565 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 28977044 is about 5383.0329740770. The cubic root of 28977044 is about 307.1505943813.

The spelling of 28977044 in words is "twenty-eight million, nine hundred seventy-seven thousand, forty-four".