28472104 has 8 divisors (see below), whose sum is σ = 53385210. Its totient is φ = 14236048.

The previous prime is 28472099. The next prime is 28472123. The reversal of 28472104 is 40127482.

It can be written as a sum of positive squares in only one way, i.e., 22071204 + 6400900 = 4698^2 + 2530^2 .

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

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1779499 + ... + 1779514.

Almost surely, 2^28472104 is an apocalyptic number.

It is an amenable number.

28472104 is a deficient number, since it is larger than the sum of its proper divisors (24913106).

28472104 is a wasteful number, since it uses less digits than its factorization.

28472104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3559019 (or 3559015 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 28.

The square root of 28472104 is about 5335.9257865904. The cubic root of 28472104 is about 305.3560439409.

Adding to 28472104 its reverse (40127482), we get a palindrome (68599586).

The spelling of 28472104 in words is "twenty-eight million, four hundred seventy-two thousand, one hundred four".