28046224 has 10 divisors (see below), whose sum is σ = 54339590. Its totient is φ = 14023104.

The previous prime is 28046201. The next prime is 28046233. The reversal of 28046224 is 42264082.

It can be written as a sum of positive squares in only one way, i.e., 27373824 + 672400 = 5232^2 + 820^2 .

It is a junction number, because it is equal to n+sod(n) for n = 28046192 and 28046201.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 876429 + ... + 876460.

It is an arithmetic number, because the mean of its divisors is an integer number (5433959).

Almost surely, 2^28046224 is an apocalyptic number.

It is an amenable number.

28046224 is a deficient number, since it is larger than the sum of its proper divisors (26293366).

28046224 is a wasteful number, since it uses less digits than its factorization.

28046224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1752897 (or 1752891 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 28046224 is about 5295.8685784298. The cubic root of 28046224 is about 303.8259044727.

The spelling of 28046224 in words is "twenty-eight million, forty-six thousand, two hundred twenty-four".