2171336740 has 24 divisors (see below), whose sum is σ = 4560978240. Its totient is φ = 868311648.

The previous prime is 2171336711. The next prime is 2171336759. The reversal of 2171336740 is 476331712.

It is a junction number, because it is equal to n+sod(n) for n = 2171336696 and 2171336705.

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, 81979 + ... + 105181.

It is an arithmetic number, because the mean of its divisors is an integer number (190040760).

Almost surely, 2^2171336740 is an apocalyptic number.

2171336740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2171336740 is an abundant number, since it is smaller than the sum of its proper divisors (2389641500).

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

2171336740 is a wasteful number, since it uses less digits than its factorization.

2171336740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27891 (or 27889 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 2171336740 is about 46597.6044448639. The cubic root of 2171336740 is about 1294.9183751219.

The spelling of 2171336740 in words is "two billion, one hundred seventy-one million, three hundred thirty-six thousand, seven hundred forty".