28882305 has 16 divisors (see below), whose sum is σ = 51346560. Its totient is φ = 15403824.

The previous prime is 28882279. The next prime is 28882307. The reversal of 28882305 is 50328882.

It is not a de Polignac number, because 28882305 - 2¹² = 28878209 is a prime.

It is a super-2 number, since 2×28882305² = 1668375084226050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28882305.

It is not an unprimeable number, because it can be changed into a prime (28882307) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106837 + ... + 107106.

It is an arithmetic number, because the mean of its divisors is an integer number (3209160).

Almost surely, 2^28882305 is an apocalyptic number.

It is an amenable number.

28882305 is a deficient number, since it is larger than the sum of its proper divisors (22464255).

28882305 is a wasteful number, since it uses less digits than its factorization.

28882305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213957 (or 213951 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 36.

The square root of 28882305 is about 5374.2259907823. The cubic root of 28882305 is about 306.8154910651.

The spelling of 28882305 in words is "twenty-eight million, eight hundred eighty-two thousand, three hundred five".