28863662 has 4 divisors (see below), whose sum is σ = 43295496. Its totient is φ = 14431830.

The previous prime is 28863661. The next prime is 28863673. The reversal of 28863662 is 26636882.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 26636882 = 2 ⋅13318441.

It is a super-2 number, since 2×28863662² = 1666221968100488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28863661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7215914 + ... + 7215917.

It is an arithmetic number, because the mean of its divisors is an integer number (10823874).

Almost surely, 2^28863662 is an apocalyptic number.

28863662 is a deficient number, since it is larger than the sum of its proper divisors (14431834).

28863662 is a wasteful number, since it uses less digits than its factorization.

28863662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14431833.

The product of its digits is 165888, while the sum is 41.

The square root of 28863662 is about 5372.4912284712. The cubic root of 28863662 is about 306.7494622589.

The spelling of 28863662 in words is "twenty-eight million, eight hundred sixty-three thousand, six hundred sixty-two".