28555502442 has 64 divisors (see below), whose sum is σ = 59583807360. Its totient is φ = 9112320000.

The previous prime is 28555502419. The next prime is 28555502473. The reversal of 28555502442 is 24420555582.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 28555502394 and 28555502403.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10524078 + ... + 10526790.

It is an arithmetic number, because the mean of its divisors is an integer number (930996990).

Almost surely, 2^28555502442 is an apocalyptic number.

28555502442 is an abundant number, since it is smaller than the sum of its proper divisors (31028304918).

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

28555502442 is a wasteful number, since it uses less digits than its factorization.

28555502442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3239.

The product of its (nonzero) digits is 640000, while the sum is 42.

The spelling of 28555502442 in words is "twenty-eight billion, five hundred fifty-five million, five hundred two thousand, four hundred forty-two".