28944476 has 24 divisors (see below), whose sum is σ = 55430256. Its totient is φ = 13115520.

The previous prime is 28944473. The next prime is 28944481. The reversal of 28944476 is 67444982.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28944473) 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, 16640 + ... + 18296.

It is an arithmetic number, because the mean of its divisors is an integer number (2309594).

Almost surely, 2^28944476 is an apocalyptic number.

It is an amenable number.

28944476 is a deficient number, since it is larger than the sum of its proper divisors (26485780).

28944476 is a wasteful number, since it uses less digits than its factorization.

28944476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2069 (or 2067 counting only the distinct ones).

The product of its digits is 387072, while the sum is 44.

The square root of 28944476 is about 5380.0070631924. The cubic root of 28944476 is about 307.0354799187.

The spelling of 28944476 in words is "twenty-eight million, nine hundred forty-four thousand, four hundred seventy-six".