28784030 has 16 divisors (see below), whose sum is σ = 56521584. Its totient is φ = 10466880.

The previous prime is 28784023. The next prime is 28784033. The reversal of 28784030 is 3048782.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28784033) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 130727 + ... + 130946.

It is an arithmetic number, because the mean of its divisors is an integer number (3532599).

Almost surely, 2^28784030 is an apocalyptic number.

28784030 is a deficient number, since it is larger than the sum of its proper divisors (27737554).

28784030 is a wasteful number, since it uses less digits than its factorization.

28784030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261691.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 28784030 is about 5365.0750227746. The cubic root of 28784030 is about 306.4671052520.

The spelling of 28784030 in words is "twenty-eight million, seven hundred eighty-four thousand, thirty".