28250392 has 8 divisors (see below), whose sum is σ = 52969500. Its totient is φ = 14125192.

The previous prime is 28250389. The next prime is 28250401. The reversal of 28250392 is 29305282.

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1765642 + ... + 1765657.

Almost surely, 2^28250392 is an apocalyptic number.

It is an amenable number.

28250392 is a deficient number, since it is larger than the sum of its proper divisors (24719108).

28250392 is a wasteful number, since it uses less digits than its factorization.

28250392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3531305 (or 3531301 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 28250392 is about 5315.1097824974. The cubic root of 28250392 is about 304.5613761416.

The spelling of 28250392 in words is "twenty-eight million, two hundred fifty thousand, three hundred ninety-two".