28123834630 has 8 divisors (see below), whose sum is σ = 50622902352. Its totient is φ = 11249533848.

The previous prime is 28123834603. The next prime is 28123834633. The reversal of 28123834630 is 3643832182.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28123834633) 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, 1406191722 + ... + 1406191741.

It is an arithmetic number, because the mean of its divisors is an integer number (6327862794).

Almost surely, 2^28123834630 is an apocalyptic number.

28123834630 is a deficient number, since it is larger than the sum of its proper divisors (22499067722).

28123834630 is a wasteful number, since it uses less digits than its factorization.

28123834630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2812383470.

The product of its (nonzero) digits is 165888, while the sum is 40.

The spelling of 28123834630 in words is "twenty-eight billion, one hundred twenty-three million, eight hundred thirty-four thousand, six hundred thirty".