28902886 has 8 divisors (see below), whose sum is σ = 43421904. Its totient is φ = 14428920.

The previous prime is 28902869. The next prime is 28902899. The reversal of 28902886 is 68820982.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 9610 + ... + 12253.

It is an arithmetic number, because the mean of its divisors is an integer number (5427738).

Almost surely, 2^28902886 is an apocalyptic number.

28902886 is a deficient number, since it is larger than the sum of its proper divisors (14519018).

28902886 is a wasteful number, since it uses less digits than its factorization.

28902886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22526.

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 28902886 is about 5376.1404371538. The cubic root of 28902886 is about 306.8883507893. Note that the first 3 decimals are identical.

It can be divided in two parts, 2890 and 2886, that added together give a square (5776 = 76²).

The spelling of 28902886 in words is "twenty-eight million, nine hundred two thousand, eight hundred eighty-six".