27918950430 has 128 divisors (see below), whose sum is σ = 80056885248. Its totient is φ = 6092583552.

The previous prime is 27918950419. The next prime is 27918950459. The reversal of 27918950430 is 3405981972.

It is a super-2 number, since 2×27918950430² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 27918950430.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2714157 + ... + 2724423.

It is an arithmetic number, because the mean of its divisors is an integer number (625444416).

Almost surely, 2^27918950430 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27918950430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40028442624).

27918950430 is an abundant number, since it is smaller than the sum of its proper divisors (52137934818).

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

27918950430 is a wasteful number, since it uses less digits than its factorization.

27918950430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10870.

The product of its (nonzero) digits is 544320, while the sum is 48.

The spelling of 27918950430 in words is "twenty-seven billion, nine hundred eighteen million, nine hundred fifty thousand, four hundred thirty".