28133462404 has 6 divisors (see below), whose sum is σ = 49233559214. Its totient is φ = 14066731200.

The previous prime is 28133462389. The next prime is 28133462407. The reversal of 28133462404 is 40426433182.

It can be written as a sum of positive squares in only one way, i.e., 27902361600 + 231100804 = 167040^2 + 15202^2 .

It is not an unprimeable number, because it can be changed into a prime (28133462407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3516682797 + ... + 3516682804.

Almost surely, 2^28133462404 is an apocalyptic number.

It is an amenable number.

28133462404 is a deficient number, since it is larger than the sum of its proper divisors (21100096810).

28133462404 is a wasteful number, since it uses less digits than its factorization.

28133462404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7033365605 (or 7033365603 counting only the distinct ones).

The product of its (nonzero) digits is 110592, while the sum is 37.

Adding to 28133462404 its reverse (40426433182), we get a palindrome (68559895586).

The spelling of 28133462404 in words is "twenty-eight billion, one hundred thirty-three million, four hundred sixty-two thousand, four hundred four".