28526693 has 24 divisors (see below), whose sum is σ = 33203520. Its totient is φ = 24435840.

The previous prime is 28526689. The next prime is 28526699. The reversal of 28526693 is 39662582.

It is not a de Polignac number, because 28526693 - 2² = 28526689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 28526693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28526699) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 159278 + ... + 159456.

It is an arithmetic number, because the mean of its divisors is an integer number (1383480).

Almost surely, 2^28526693 is an apocalyptic number.

28526693 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

28526693 is a deficient number, since it is larger than the sum of its proper divisors (4676827).

28526693 is a wasteful number, since it uses less digits than its factorization.

28526693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269 (or 256 counting only the distinct ones).

The product of its digits is 155520, while the sum is 41.

The square root of 28526693 is about 5341.0385694170. The cubic root of 28526693 is about 305.5510703817.

The spelling of 28526693 in words is "twenty-eight million, five hundred twenty-six thousand, six hundred ninety-three".