2190636 has 36 divisors (see below), whose sum is σ = 6329232. Its totient is φ = 625824.

The previous prime is 2190613. The next prime is 2190647. The reversal of 2190636 is 6360912.

It is a happy number.

2190636 is a `hidden beast` number, since 21 + 9 + 0 + 636 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4095 + ... + 4598.

It is an arithmetic number, because the mean of its divisors is an integer number (175812).

2^2190636 is an apocalyptic number.

It is an amenable number.

2190636 is an abundant number, since it is smaller than the sum of its proper divisors (4138596).

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

2190636 is a wasteful number, since it uses less digits than its factorization.

2190636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8710 (or 8705 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 2190636 is about 1480.0797275823. The cubic root of 2190636 is about 129.8743559226.

The spelling of 2190636 in words is "two million, one hundred ninety thousand, six hundred thirty-six".