2127891392 has 56 divisors (see below), whose sum is σ = 4630564272. Its totient is φ = 962150400.

The previous prime is 2127891383. The next prime is 2127891397. The reversal of 2127891392 is 2931987212.

It is a super-2 number, since 2×2127891392² = 9055843552295395328, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2127891397) 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, 128042 + ... + 143702.

Almost surely, 2^2127891392 is an apocalyptic number.

2127891392 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2127891392, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2315282136).

2127891392 is an abundant number, since it is smaller than the sum of its proper divisors (2502672880).

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

2127891392 is a wasteful number, since it uses less digits than its factorization.

2127891392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15877 (or 15867 counting only the distinct ones).

The product of its digits is 108864, while the sum is 44.

The square root of 2127891392 is about 46129.0731751680. The cubic root of 2127891392 is about 1286.2236356115.

The spelling of 2127891392 in words is "two billion, one hundred twenty-seven million, eight hundred ninety-one thousand, three hundred ninety-two".