28840302 has 24 divisors (see below), whose sum is σ = 64013040. Its totient is φ = 9378720.

The previous prime is 28840289. The next prime is 28840307. The reversal of 28840302 is 20304882.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28840307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 18802 + ... + 20277.

It is an arithmetic number, because the mean of its divisors is an integer number (2667210).

Almost surely, 2^28840302 is an apocalyptic number.

28840302 is an abundant number, since it is smaller than the sum of its proper divisors (35172738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28840302 is a wasteful number, since it uses less digits than its factorization.

28840302 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39128 (or 39125 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 28840302 is about 5370.3167504347. The cubic root of 28840302 is about 306.6666868830. Note that the first 4 decimals are identical.

The spelling of 28840302 in words is "twenty-eight million, eight hundred forty thousand, three hundred two".