28046484 has 18 divisors (see below), whose sum is σ = 70895370. Its totient is φ = 9348816.

The previous prime is 28046477. The next prime is 28046497. The reversal of 28046484 is 48464082.

28046484 is a `hidden beast` number, since 2 + 8 + 0 + 4 + 648 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 23328900 + 4717584 = 4830^2 + 2172^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 779069 = 28046484 / (2 + 8 + 0 + 4 + 6 + 4 + 8 + 4).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 389499 + ... + 389570.

Almost surely, 2^28046484 is an apocalyptic number.

It is an amenable number.

28046484 is an abundant number, since it is smaller than the sum of its proper divisors (42848886).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28046484 is a wasteful number, since it uses less digits than its factorization.

28046484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779079 (or 779074 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

The square root of 28046484 is about 5295.8931258098. The cubic root of 28046484 is about 303.8268433334.

It can be divided in two parts, 280 and 46484, that added together give a palindrome (46764).

The spelling of 28046484 in words is "twenty-eight million, forty-six thousand, four hundred eighty-four".