28526861 has 8 divisors (see below), whose sum is σ = 31173984. Its totient is φ = 25888720.

The previous prime is 28526843. The next prime is 28526873. The reversal of 28526861 is 16862582.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 28526861 - 2¹⁰ = 28525837 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28526891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5615 + ... + 9411.

It is an arithmetic number, because the mean of its divisors is an integer number (3896748).

Almost surely, 2^28526861 is an apocalyptic number.

It is an amenable number.

28526861 is a deficient number, since it is larger than the sum of its proper divisors (2647123).

28526861 is a wasteful number, since it uses less digits than its factorization.

28526861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4491.

The product of its digits is 46080, while the sum is 38.

The square root of 28526861 is about 5341.0542966721. The cubic root of 28526861 is about 305.5516701998.

The spelling of 28526861 in words is "twenty-eight million, five hundred twenty-six thousand, eight hundred sixty-one".