28135319742 has 12 divisors (see below), whose sum is σ = 60959859480. Its totient is φ = 9378439908.

The previous prime is 28135319741. The next prime is 28135319801. The reversal of 28135319742 is 24791353182.

It is a happy number.

28135319742 is a `hidden beast` number, since 28 + 1 + 3 + 531 + 97 + 4 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28135319741) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 781536642 + ... + 781536677.

It is an arithmetic number, because the mean of its divisors is an integer number (5079988290).

Almost surely, 2^28135319742 is an apocalyptic number.

28135319742 is an abundant number, since it is smaller than the sum of its proper divisors (32824539738).

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

28135319742 is a wasteful number, since it uses less digits than its factorization.

28135319742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1563073327 (or 1563073324 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The spelling of 28135319742 in words is "twenty-eight billion, one hundred thirty-five million, three hundred nineteen thousand, seven hundred forty-two".