2156416140 has 48 divisors (see below), whose sum is σ = 6041413728. Its totient is φ = 574715904.

The previous prime is 2156416139. The next prime is 2156416151. The reversal of 2156416140 is 416146512.

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

It is a junction number, because it is equal to n+sod(n) for n = 2156416098 and 2156416107.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106684 + ... + 125276.

It is an arithmetic number, because the mean of its divisors is an integer number (125862786).

Almost surely, 2^2156416140 is an apocalyptic number.

2156416140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2156416140 is an abundant number, since it is smaller than the sum of its proper divisors (3884997588).

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

2156416140 is a wasteful number, since it uses less digits than its factorization.

2156416140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20538 (or 20536 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 2156416140 is about 46437.2279534427. The cubic root of 2156416140 is about 1291.9454930406.

The spelling of 2156416140 in words is "two billion, one hundred fifty-six million, four hundred sixteen thousand, one hundred forty".