28869310 has 32 divisors (see below), whose sum is σ = 53514432. Its totient is φ = 11208960.

The previous prime is 28869307. The next prime is 28869329. The reversal of 28869310 is 1396882.

It is a super-2 number, since 2×28869310² = 1666874119752200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28869310.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 51552 + ... + 52108.

It is an arithmetic number, because the mean of its divisors is an integer number (1672326).

Almost surely, 2^28869310 is an apocalyptic number.

28869310 is a deficient number, since it is larger than the sum of its proper divisors (24645122).

28869310 is a wasteful number, since it uses less digits than its factorization.

28869310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 708.

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 28869310 is about 5373.0168434502. The cubic root of 28869310 is about 306.7694690524.

The spelling of 28869310 in words is "twenty-eight million, eight hundred sixty-nine thousand, three hundred ten".