28685995 has 16 divisors (see below), whose sum is σ = 37300032. Its totient is φ = 21052800.

The previous prime is 28685981. The next prime is 28685999. The reversal of 28685995 is 59958682.

It is not a de Polignac number, because 28685995 - 2¹⁵ = 28653227 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28685999) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9970 + ... + 12520.

It is an arithmetic number, because the mean of its divisors is an integer number (2331252).

Almost surely, 2^28685995 is an apocalyptic number.

28685995 is a deficient number, since it is larger than the sum of its proper divisors (8614037).

28685995 is a wasteful number, since it uses less digits than its factorization.

28685995 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2742.

The product of its digits is 1555200, while the sum is 52.

The square root of 28685995 is about 5355.9308247960. The cubic root of 28685995 is about 306.1187792683.

The spelling of 28685995 in words is "twenty-eight million, six hundred eighty-five thousand, nine hundred ninety-five".