28263902 has 4 divisors (see below), whose sum is σ = 42395856. Its totient is φ = 14131950.

The previous prime is 28263881. The next prime is 28263931. The reversal of 28263902 is 20936282.

It is a semiprime because it is the product of two primes.

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, 7065974 + ... + 7065977.

It is an arithmetic number, because the mean of its divisors is an integer number (10598964).

Almost surely, 2^28263902 is an apocalyptic number.

28263902 is a deficient number, since it is larger than the sum of its proper divisors (14131954).

28263902 is a wasteful number, since it uses less digits than its factorization.

28263902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14131953.

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 28263902 is about 5316.3805356652. The cubic root of 28263902 is about 304.6099178688.

The spelling of 28263902 in words is "twenty-eight million, two hundred sixty-three thousand, nine hundred two".