28231389140862 has 32 divisors (see below), whose sum is σ = 57239565004800. Its totient is φ = 9281013566400.

The previous prime is 28231389140849. The next prime is 28231389140879. The reversal of 28231389140862 is 26804198313282.

It is a super-2 number, since 2×28231389140862² (a number of 28 digits) contains 22 as substring.

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, 5713987 + ... + 9439937.

It is an arithmetic number, because the mean of its divisors is an integer number (1788736406400).

Almost surely, 2^{28231389140862} is an apocalyptic number.

28231389140862 is an abundant number, since it is smaller than the sum of its proper divisors (29008175863938).

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

28231389140862 is a wasteful number, since it uses less digits than its factorization.

28231389140862 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3743328.

The product of its (nonzero) digits is 7962624, while the sum is 57.

The spelling of 28231389140862 in words is "twenty-eight trillion, two hundred thirty-one billion, three hundred eighty-nine million, one hundred forty thousand, eight hundred sixty-two".