28690659 has 16 divisors (see below), whose sum is σ = 42906240. Its totient is φ = 18946440.

The previous prime is 28690639. The next prime is 28690661. The reversal of 28690659 is 95609682.

It is not a de Polignac number, because 28690659 - 2¹⁹ = 28166371 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28690609) 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, 2077 + ... + 7854.

It is an arithmetic number, because the mean of its divisors is an integer number (2681640).

Almost surely, 2^28690659 is an apocalyptic number.

28690659 is a deficient number, since it is larger than the sum of its proper divisors (14215581).

28690659 is a wasteful number, since it uses less digits than its factorization.

28690659 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10047 (or 10041 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 28690659 is about 5356.3662122749. The cubic root of 28690659 is about 306.1353687878.

The spelling of 28690659 in words is "twenty-eight million, six hundred ninety thousand, six hundred fifty-nine".