2261642 has 8 divisors (see below), whose sum is σ = 3475332. Its totient is φ = 1103200.

The previous prime is 2261639. The next prime is 2261653. The reversal of 2261642 is 2461622.

It can be written as a sum of positive squares in 2 ways, for example, as 2247001 + 14641 = 1499^2 + 121^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an Ulam number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13709 + ... + 13872.

2^2261642 is an apocalyptic number.

2261642 is a deficient number, since it is larger than the sum of its proper divisors (1213690).

2261642 is a wasteful number, since it uses less digits than its factorization.

2261642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27624.

The product of its digits is 1152, while the sum is 23.

The square root of 2261642 is about 1503.8756597538. The cubic root of 2261642 is about 131.2626859998.

The spelling of 2261642 in words is "two million, two hundred sixty-one thousand, six hundred forty-two".