28405545359292 has 72 divisors (see below), whose sum is σ = 73046850196320. Its totient is φ = 9305330711040.

The previous prime is 28405545359189. The next prime is 28405545359329. The reversal of 28405545359292 is 29295354550482.

It is a happy number.

28405545359292 is a `hidden beast` number, since 2 + 8 + 4 + 0 + 5 + 5 + 4 + 535 + 9 + 2 + 92 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16952817 + ... + 18552872.

It is an arithmetic number, because the mean of its divisors is an integer number (1014539586060).

Almost surely, 2^{28405545359292} is an apocalyptic number.

It is an amenable number.

28405545359292 is an abundant number, since it is smaller than the sum of its proper divisors (44641304837028).

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

28405545359292 is a wasteful number, since it uses less digits than its factorization.

28405545359292 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35506083 (or 35506078 counting only the distinct ones).

The product of its (nonzero) digits is 155520000, while the sum is 63.

The spelling of 28405545359292 in words is "twenty-eight trillion, four hundred five billion, five hundred forty-five million, three hundred fifty-nine thousand, two hundred ninety-two".