2160207640 has 32 divisors (see below), whose sum is σ = 4940152560. Its totient is φ = 849916800.

The previous prime is 2160207619. The next prime is 2160207683. The reversal of 2160207640 is 467020612.

It is a junction number, because it is equal to n+sod(n) for n = 2160207599 and 2160207608.

It is a congruent number.

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, 440226 + ... + 445105.

Almost surely, 2^2160207640 is an apocalyptic number.

2160207640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2160207640 is an abundant number, since it is smaller than the sum of its proper divisors (2779944920).

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

2160207640 is a wasteful number, since it uses less digits than its factorization.

2160207640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 885403 (or 885399 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 2160207640 is about 46478.0339515346. The cubic root of 2160207640 is about 1292.7022336937.

The spelling of 2160207640 in words is "two billion, one hundred sixty million, two hundred seven thousand, six hundred forty".