28694465 has 32 divisors (see below), whose sum is σ = 38102400. Its totient is φ = 20666880.

The previous prime is 28694447. The next prime is 28694467. The reversal of 28694465 is 56449682.

It is not a de Polignac number, because 28694465 - 2¹⁴ = 28678081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28694467) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206366 + ... + 206504.

It is an arithmetic number, because the mean of its divisors is an integer number (1190700).

Almost surely, 2^28694465 is an apocalyptic number.

It is an amenable number.

28694465 is a deficient number, since it is larger than the sum of its proper divisors (9407935).

28694465 is a wasteful number, since it uses less digits than its factorization.

28694465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257.

The product of its digits is 414720, while the sum is 44.

The square root of 28694465 is about 5356.7214786658. The cubic root of 28694465 is about 306.1489051295.

The spelling of 28694465 in words is "twenty-eight million, six hundred ninety-four thousand, four hundred sixty-five".