28903868132 has 36 divisors (see below), whose sum is σ = 52421932836. Its totient is φ = 13944053760.

The previous prime is 28903868131. The next prime is 28903868153. The reversal of 28903868132 is 23186830982.

It can be written as a sum of positive squares in 6 ways, for example, as 269813476 + 28634054656 = 16426^2 + 169216^2 .

It is a Smith number, since the sum of its digits (50) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (28903868131) 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, 9259532 + ... + 9262652.

It is an arithmetic number, because the mean of its divisors is an integer number (1456164801).

Almost surely, 2^28903868132 is an apocalyptic number.

It is an amenable number.

28903868132 is a deficient number, since it is larger than the sum of its proper divisors (23518064704).

28903868132 is a wasteful number, since it uses less digits than its factorization.

28903868132 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5936 (or 5905 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 50.

The spelling of 28903868132 in words is "twenty-eight billion, nine hundred three million, eight hundred sixty-eight thousand, one hundred thirty-two".