28273506030 has 320 divisors, whose sum is σ = 95248783872. Its totient is φ = 5846204160.

The previous prime is 28273506013. The next prime is 28273506031. The reversal of 28273506030 is 3060537282.

28273506030 is a `hidden beast` number, since 2 + 82 + 73 + 506 + 0 + 3 + 0 = 666.

It is a super-2 number, since 2×28273506030² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28273506031) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 14156992 + ... + 14158988.

Almost surely, 2^28273506030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28273506030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47624391936).

28273506030 is an abundant number, since it is smaller than the sum of its proper divisors (66975277842).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28273506030 is a wasteful number, since it uses less digits than its factorization.

28273506030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2261 (or 2252 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 36.

The spelling of 28273506030 in words is "twenty-eight billion, two hundred seventy-three million, five hundred six thousand, thirty".