2131764 has 12 divisors (see below), whose sum is σ = 4974144. Its totient is φ = 710584.

The previous prime is 2131721. The next prime is 2131771. The reversal of 2131764 is 4671312.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88812 + ... + 88835.

It is an arithmetic number, because the mean of its divisors is an integer number (414512).

2^2131764 is an apocalyptic number.

It is an amenable number.

2131764 is an abundant number, since it is smaller than the sum of its proper divisors (2842380).

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

2131764 is a wasteful number, since it uses less digits than its factorization.

2131764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177654 (or 177652 counting only the distinct ones).

The product of its digits is 1008, while the sum is 24.

The square root of 2131764 is about 1460.0561633033. The cubic root of 2131764 is about 128.7003440649.

The spelling of 2131764 in words is "two million, one hundred thirty-one thousand, seven hundred sixty-four".