28030277530 has 8 divisors (see below), whose sum is σ = 50454499572. Its totient is φ = 11212111008.

The previous prime is 28030277477. The next prime is 28030277543. The reversal of 28030277530 is 3577203082.

It can be written as a sum of positive squares in 2 ways, for example, as 26596064889 + 1434212641 = 163083^2 + 37871^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 28030277530.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1401513867 + ... + 1401513886.

Almost surely, 2^28030277530 is an apocalyptic number.

28030277530 is a deficient number, since it is larger than the sum of its proper divisors (22424222042).

28030277530 is a wasteful number, since it uses less digits than its factorization.

28030277530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803027760.

The product of its (nonzero) digits is 70560, while the sum is 37.

The spelling of 28030277530 in words is "twenty-eight billion, thirty million, two hundred seventy-seven thousand, five hundred thirty".