2170623140 has 24 divisors (see below), whose sum is σ = 5209495872. Its totient is φ = 744213600.

The previous prime is 2170623097. The next prime is 2170623149. The reversal of 2170623140 is 413260712.

It is not an unprimeable number, because it can be changed into a prime (2170623149) 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, 7752086 + ... + 7752365.

It is an arithmetic number, because the mean of its divisors is an integer number (217062328).

Almost surely, 2^2170623140 is an apocalyptic number.

2170623140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2170623140 is an abundant number, since it is smaller than the sum of its proper divisors (3038872732).

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

2170623140 is a wasteful number, since it uses less digits than its factorization.

2170623140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15504467 (or 15504465 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 2170623140 is about 46589.9467696627. The cubic root of 2170623140 is about 1294.7765032229.

Adding to 2170623140 its reverse (413260712), we get a palindrome (2583883852).

The spelling of 2170623140 in words is "two billion, one hundred seventy million, six hundred twenty-three thousand, one hundred forty".