28544476 has 12 divisors (see below), whose sum is σ = 50149008. Its totient is φ = 14216192.

The previous prime is 28544471. The next prime is 28544489. The reversal of 28544476 is 67444582.

It is a happy number.

It is a super-2 number, since 2×28544476² = 1629574220229152, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28544471) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12856 + ... + 14911.

It is an arithmetic number, because the mean of its divisors is an integer number (4179084).

Almost surely, 2^28544476 is an apocalyptic number.

It is an amenable number.

28544476 is a deficient number, since it is larger than the sum of its proper divisors (21604532).

28544476 is a wasteful number, since it uses less digits than its factorization.

28544476 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28028 (or 28026 counting only the distinct ones).

The product of its digits is 215040, while the sum is 40.

The square root of 28544476 is about 5342.7030611854. The cubic root of 28544476 is about 305.6145487760.

The spelling of 28544476 in words is "twenty-eight million, five hundred forty-four thousand, four hundred seventy-six".