28263790 has 8 divisors (see below), whose sum is σ = 50874840. Its totient is φ = 11305512.

The previous prime is 28263769. The next prime is 28263793. The reversal of 28263790 is 9736282.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28263793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1413180 + ... + 1413199.

It is an arithmetic number, because the mean of its divisors is an integer number (6359355).

Almost surely, 2^28263790 is an apocalyptic number.

28263790 is a deficient number, since it is larger than the sum of its proper divisors (22611050).

28263790 is a wasteful number, since it uses less digits than its factorization.

28263790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2826386.

The product of its (nonzero) digits is 36288, while the sum is 37.

The square root of 28263790 is about 5316.3700021725. The cubic root of 28263790 is about 304.6095155139.

The spelling of 28263790 in words is "twenty-eight million, two hundred sixty-three thousand, seven hundred ninety".