28226984 has 8 divisors (see below), whose sum is σ = 52925610. Its totient is φ = 14113488.

The previous prime is 28226971. The next prime is 28226999. The reversal of 28226984 is 48962282.

It can be written as a sum of positive squares in only one way, i.e., 19166884 + 9060100 = 4378^2 + 3010^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1764179 + ... + 1764194.

Almost surely, 2^28226984 is an apocalyptic number.

It is an amenable number.

28226984 is a deficient number, since it is larger than the sum of its proper divisors (24698626).

28226984 is a wasteful number, since it uses less digits than its factorization.

28226984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3528379 (or 3528375 counting only the distinct ones).

The product of its digits is 110592, while the sum is 41.

The square root of 28226984 is about 5312.9073020334. The cubic root of 28226984 is about 304.4772340330.

The spelling of 28226984 in words is "twenty-eight million, two hundred twenty-six thousand, nine hundred eighty-four".