28933407361 has 4 divisors (see below), whose sum is σ = 28978545924. Its totient is φ = 28888268800.

The previous prime is 28933407337. The next prime is 28933407409. The reversal of 28933407361 is 16370433982.

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 23338367361 + 5595040000 = 152769^2 + 74800^2 .

It is a cyclic number.

It is not a de Polignac number, because 28933407361 - 2¹⁵ = 28933374593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (28933401361) 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, 22568320 + ... + 22569601.

It is an arithmetic number, because the mean of its divisors is an integer number (7244636481).

Almost surely, 2^28933407361 is an apocalyptic number.

It is an amenable number.

28933407361 is a deficient number, since it is larger than the sum of its proper divisors (45138563).

28933407361 is an equidigital number, since it uses as much as digits as its factorization.

28933407361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45138562.

The product of its (nonzero) digits is 653184, while the sum is 46.

The spelling of 28933407361 in words is "twenty-eight billion, nine hundred thirty-three million, four hundred seven thousand, three hundred sixty-one".