28261150542 has 24 divisors (see below), whose sum is σ = 61284829320. Its totient is φ = 9412331760.

The previous prime is 28261150531. The next prime is 28261150543. The reversal of 28261150542 is 24505116282.

28261150542 is a `hidden beast` number, since 2 + 8 + 2 + 61 + 1 + 50 + 542 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 28261150497 and 28261150506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28261150543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 649317 + ... + 691472.

It is an arithmetic number, because the mean of its divisors is an integer number (2553534555).

Almost surely, 2^28261150542 is an apocalyptic number.

28261150542 is an abundant number, since it is smaller than the sum of its proper divisors (33023678778).

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

28261150542 is a wasteful number, since it uses less digits than its factorization.

28261150542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1341968 (or 1341965 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The spelling of 28261150542 in words is "twenty-eight billion, two hundred sixty-one million, one hundred fifty thousand, five hundred forty-two".