28387683 has 6 divisors (see below), whose sum is σ = 41004444. Its totient is φ = 18925116.

The previous prime is 28387679. The next prime is 28387687. The reversal of 28387683 is 38678382.

It is an interprime number because it is at equal distance from previous prime (28387679) and next prime (28387687).

It is not a de Polignac number, because 28387683 - 2² = 28387679 is a prime.

It is a super-2 number, since 2×28387683² = 1611721092216978, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (28387687) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1577085 + ... + 1577102.

It is an arithmetic number, because the mean of its divisors is an integer number (6834074).

Almost surely, 2^28387683 is an apocalyptic number.

28387683 is a deficient number, since it is larger than the sum of its proper divisors (12616761).

28387683 is a wasteful number, since it uses less digits than its factorization.

28387683 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3154193 (or 3154190 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 28387683 is about 5328.0092905324. The cubic root of 28387683 is about 305.0539472791.

The spelling of 28387683 in words is "twenty-eight million, three hundred eighty-seven thousand, six hundred eighty-three".