28742224782 has 32 divisors (see below), whose sum is σ = 59364343584. Its totient is φ = 9270288000.

The previous prime is 28742224769. The next prime is 28742224789.

28742224782 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×28742224782² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28742224789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 317469 + ... + 397832.

It is an arithmetic number, because the mean of its divisors is an integer number (1855135737).

Almost surely, 2^28742224782 is an apocalyptic number.

28742224782 is an abundant number, since it is smaller than the sum of its proper divisors (30622118802).

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

28742224782 is a wasteful number, since it uses less digits than its factorization.

28742224782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 715524.

The product of its digits is 1605632, while the sum is 48.

The spelling of 28742224782 in words is "twenty-eight billion, seven hundred forty-two million, two hundred twenty-four thousand, seven hundred eighty-two".