28662886 has 8 divisors (see below), whose sum is σ = 49136400. Its totient is φ = 12284088.

The previous prime is 28662883. The next prime is 28662911. The reversal of 28662886 is 68826682.

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

It is a super-2 number, since 2×28662886² = 1643122067697992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28662883) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1023661 + ... + 1023688.

It is an arithmetic number, because the mean of its divisors is an integer number (6142050).

Almost surely, 2^28662886 is an apocalyptic number.

28662886 is a deficient number, since it is larger than the sum of its proper divisors (20473514).

28662886 is a wasteful number, since it uses less digits than its factorization.

28662886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2047358.

The product of its digits is 442368, while the sum is 46.

The square root of 28662886 is about 5353.7730620563. The cubic root of 28662886 is about 306.0365556453.

The spelling of 28662886 in words is "twenty-eight million, six hundred sixty-two thousand, eight hundred eighty-six".