28875900629 has 4 divisors (see below), whose sum is σ = 28876743084. Its totient is φ = 28875058176.

The previous prime is 28875900607. The next prime is 28875900653. The reversal of 28875900629 is 92600957882.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3997147729 + 24878752900 = 63223^2 + 157730^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-28875900629 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28875900029) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 367532 + ... + 439125.

It is an arithmetic number, because the mean of its divisors is an integer number (7219185771).

Almost surely, 2^28875900629 is an apocalyptic number.

It is an amenable number.

28875900629 is a deficient number, since it is larger than the sum of its proper divisors (842455).

28875900629 is an equidigital number, since it uses as much as digits as its factorization.

28875900629 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 842454.

The product of its (nonzero) digits is 4354560, while the sum is 56.

The spelling of 28875900629 in words is "twenty-eight billion, eight hundred seventy-five million, nine hundred thousand, six hundred twenty-nine".