28952685 has 24 divisors (see below), whose sum is σ = 51543960. Its totient is φ = 15023232.

The previous prime is 28952669. The next prime is 28952711. The reversal of 28952685 is 58625982.

It can be written as a sum of positive squares in 4 ways, for example, as 9715689 + 19236996 = 3117^2 + 4386^2 .

It is not a de Polignac number, because 28952685 - 2⁴ = 28952669 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28952685.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7030 + ... + 10359.

It is an arithmetic number, because the mean of its divisors is an integer number (2147665).

Almost surely, 2^28952685 is an apocalyptic number.

It is an amenable number.

28952685 is a deficient number, since it is larger than the sum of its proper divisors (22591275).

28952685 is a wasteful number, since it uses less digits than its factorization.

28952685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17437 (or 17434 counting only the distinct ones).

The product of its digits is 345600, while the sum is 45.

The square root of 28952685 is about 5380.7699263210. The cubic root of 28952685 is about 307.0645034880.

The spelling of 28952685 in words is "twenty-eight million, nine hundred fifty-two thousand, six hundred eighty-five".