28428186542392 has 64 divisors (see below), whose sum is σ = 65845587225600. Its totient is φ = 11204816158080.

The previous prime is 28428186542387. The next prime is 28428186542401. The reversal of 28428186542392 is 29324568182482.

It is a happy 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, 71850142 + ... + 72244717.

It is an arithmetic number, because the mean of its divisors is an integer number (1028837300400).

Almost surely, 2^{28428186542392} is an apocalyptic number.

It is an amenable number.

28428186542392 is an abundant number, since it is smaller than the sum of its proper divisors (37417400683208).

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

28428186542392 is a wasteful number, since it uses less digits than its factorization.

28428186542392 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144095156 (or 144095152 counting only the distinct ones).

The product of its digits is 106168320, while the sum is 64.

The spelling of 28428186542392 in words is "twenty-eight trillion, four hundred twenty-eight billion, one hundred eighty-six million, five hundred forty-two thousand, three hundred ninety-two".