28230392 has 8 divisors (see below), whose sum is σ = 52932000. Its totient is φ = 14115192.

The previous prime is 28230359. The next prime is 28230443. The reversal of 28230392 is 29303282.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1764392 + ... + 1764407.

It is an arithmetic number, because the mean of its divisors is an integer number (6616500).

Almost surely, 2^28230392 is an apocalyptic number.

It is an amenable number.

28230392 is a deficient number, since it is larger than the sum of its proper divisors (24701608).

28230392 is a wasteful number, since it uses less digits than its factorization.

28230392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3528805 (or 3528801 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 28230392 is about 5313.2280207046. The cubic root of 28230392 is about 304.4894872804.

It can be divided in two parts, 28230 and 392, that multiplied together give a triangular number (11066160 = T₄₇₀₄).

The spelling of 28230392 in words is "twenty-eight million, two hundred thirty thousand, three hundred ninety-two".