28924243924 has 24 divisors (see below), whose sum is σ = 52327737000. Its totient is φ = 13979934720.

The previous prime is 28924243919. The next prime is 28924243927. The reversal of 28924243924 is 42934242982.

It can be written as a sum of positive squares in 4 ways, for example, as 521208900 + 28403035024 = 22830^2 + 168532^2 .

It is a super-2 number, since 2×28924243924² (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 (28924243927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 791149 + ... + 826900.

It is an arithmetic number, because the mean of its divisors is an integer number (2180322375).

Almost surely, 2^28924243924 is an apocalyptic number.

It is an amenable number.

28924243924 is a deficient number, since it is larger than the sum of its proper divisors (23403493076).

28924243924 is a wasteful number, since it uses less digits than its factorization.

28924243924 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618203 (or 1618201 counting only the distinct ones).

The product of its digits is 1990656, while the sum is 49.

The spelling of 28924243924 in words is "twenty-eight billion, nine hundred twenty-four million, two hundred forty-three thousand, nine hundred twenty-four".