28169442534 has 32 divisors (see below), whose sum is σ = 57735659520. Its totient is φ = 9157198400.

The previous prime is 28169442529. The next prime is 28169442559. The reversal of 28169442534 is 43524496182.

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, 645787 + ... + 688025.

It is an arithmetic number, because the mean of its divisors is an integer number (1804239360).

Almost surely, 2^28169442534 is an apocalyptic number.

28169442534 is an abundant number, since it is smaller than the sum of its proper divisors (29566216986).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28169442534 is a wasteful number, since it uses less digits than its factorization.

28169442534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44996.

The product of its digits is 1658880, while the sum is 48.

The spelling of 28169442534 in words is "twenty-eight billion, one hundred sixty-nine million, four hundred forty-two thousand, five hundred thirty-four".