2122643460 has 96 divisors (see below), whose sum is σ = 7192039680. Its totient is φ = 456634368.

The previous prime is 2122643407. The next prime is 2122643461. The reversal of 2122643460 is 643462212.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (2122643461) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 141505 + ... + 155784.

It is an arithmetic number, because the mean of its divisors is an integer number (74917080).

Almost surely, 2^2122643460 is an apocalyptic number.

2122643460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2122643460 is an abundant number, since it is smaller than the sum of its proper divisors (5069396220).

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

2122643460 is a wasteful number, since it uses less digits than its factorization.

2122643460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297325 (or 297323 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 2122643460 is about 46072.1549311512. The cubic root of 2122643460 is about 1285.1653781408.

The spelling of 2122643460 in words is "two billion, one hundred twenty-two million, six hundred forty-three thousand, four hundred sixty".