28528551535 has 16 divisors (see below), whose sum is σ = 37872479232. Its totient is φ = 20455808800.

The previous prime is 28528551523. The next prime is 28528551599. The reversal of 28528551535 is 53515582582.

It is not a de Polignac number, because 28528551535 - 2⁵ = 28528551503 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3648919 + ... + 3656728.

It is an arithmetic number, because the mean of its divisors is an integer number (2367029952).

Almost surely, 2^28528551535 is an apocalyptic number.

28528551535 is a deficient number, since it is larger than the sum of its proper divisors (9343927697).

28528551535 is a wasteful number, since it uses less digits than its factorization.

28528551535 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7305734.

The product of its digits is 2400000, while the sum is 49.

The spelling of 28528551535 in words is "twenty-eight billion, five hundred twenty-eight million, five hundred fifty-one thousand, five hundred thirty-five".