28057430630 has 16 divisors (see below), whose sum is σ = 50528700720. Its totient is φ = 11217344352.

The previous prime is 28057430629. The next prime is 28057430633. The reversal of 28057430630 is 3603475082.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28057430633) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 682520 + ... + 722459.

It is an arithmetic number, because the mean of its divisors is an integer number (3158043795).

Almost surely, 2^28057430630 is an apocalyptic number.

28057430630 is a deficient number, since it is larger than the sum of its proper divisors (22471270090).

28057430630 is a wasteful number, since it uses less digits than its factorization.

28057430630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1406983.

The product of its (nonzero) digits is 120960, while the sum is 38.

The spelling of 28057430630 in words is "twenty-eight billion, fifty-seven million, four hundred thirty thousand, six hundred thirty".