28880858 has 16 divisors (see below), whose sum is σ = 46296360. Its totient is φ = 13464576.

The previous prime is 28880857. The next prime is 28880869. The reversal of 28880858 is 85808882.

It can be written as a sum of positive squares in 4 ways, for example, as 28058209 + 822649 = 5297^2 + 907^2 .

It is not an unprimeable number, because it can be changed into a prime (28880857) 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, 191 + ... + 7602.

Almost surely, 2^28880858 is an apocalyptic number.

28880858 is a deficient number, since it is larger than the sum of its proper divisors (17415502).

28880858 is a wasteful number, since it uses less digits than its factorization.

28880858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7921.

The product of its (nonzero) digits is 327680, while the sum is 47.

The square root of 28880858 is about 5374.0913650588. The cubic root of 28880858 is about 306.8103671731.

The spelling of 28880858 in words is "twenty-eight million, eight hundred eighty thousand, eight hundred fifty-eight".