28537044838 has 8 divisors (see below), whose sum is σ = 43008437880. Its totient is φ = 14200898880.

The previous prime is 28537044799. The next prime is 28537044919. The reversal of 28537044838 is 83844073582.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33811243 + ... + 33812086.

It is an arithmetic number, because the mean of its divisors is an integer number (5376054735).

Almost surely, 2^28537044838 is an apocalyptic number.

28537044838 is a deficient number, since it is larger than the sum of its proper divisors (14471393042).

28537044838 is a wasteful number, since it uses less digits than its factorization.

28537044838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67623542.

The product of its (nonzero) digits is 5160960, while the sum is 52.

The spelling of 28537044838 in words is "twenty-eight billion, five hundred thirty-seven million, forty-four thousand, eight hundred thirty-eight".