28526985902 has 4 divisors (see below), whose sum is σ = 42790478856. Its totient is φ = 14263492950.

The previous prime is 28526985899. The next prime is 28526985913. The reversal of 28526985902 is 20958962582.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20958962582 = 2 ⋅10479481291.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7131746474 + ... + 7131746477.

It is an arithmetic number, because the mean of its divisors is an integer number (10697619714).

Almost surely, 2^28526985902 is an apocalyptic number.

28526985902 is a deficient number, since it is larger than the sum of its proper divisors (14263492954).

28526985902 is a wasteful number, since it uses less digits than its factorization.

28526985902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14263492953.

The product of its (nonzero) digits is 6220800, while the sum is 56.

The spelling of 28526985902 in words is "twenty-eight billion, five hundred twenty-six million, nine hundred eighty-five thousand, nine hundred two".