28783630 has 16 divisors (see below), whose sum is σ = 52287840. Its totient is φ = 11407392.

The previous prime is 28783609. The next prime is 28783633. The reversal of 28783630 is 3638782.

It is a self number, because there is not a number n which added to its sum of digits gives 28783630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28783633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12114 + ... + 14293.

It is an arithmetic number, because the mean of its divisors is an integer number (3267990).

Almost surely, 2^28783630 is an apocalyptic number.

28783630 is a deficient number, since it is larger than the sum of its proper divisors (23504210).

28783630 is a wasteful number, since it uses less digits than its factorization.

28783630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26523.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 28783630 is about 5365.0377445084. The cubic root of 28783630 is about 306.4656856290.

The spelling of 28783630 in words is "twenty-eight million, seven hundred eighty-three thousand, six hundred thirty".