2162427780 has 24 divisors (see below), whose sum is σ = 6054797952. Its totient is φ = 576647392.

The previous prime is 2162427779. The next prime is 2162427809. The reversal of 2162427780 is 877242612.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18020172 + ... + 18020291.

It is an arithmetic number, because the mean of its divisors is an integer number (252283248).

Almost surely, 2^2162427780 is an apocalyptic number.

2162427780 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2162427780 is an abundant number, since it is smaller than the sum of its proper divisors (3892370172).

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

2162427780 is a wasteful number, since it uses less digits than its factorization.

2162427780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36040475 (or 36040473 counting only the distinct ones).

The product of its (nonzero) digits is 75264, while the sum is 39.

The square root of 2162427780 is about 46501.9115736117. The cubic root of 2162427780 is about 1293.1449376331.

The spelling of 2162427780 in words is "two billion, one hundred sixty-two million, four hundred twenty-seven thousand, seven hundred eighty".