2261772 has 18 divisors (see below), whose sum is σ = 5717348. Its totient is φ = 753912.

The previous prime is 2261771. The next prime is 2261789. The reversal of 2261772 is 2771622.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×2261772² = 10231225159968, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2261771) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 31378 + ... + 31449.

2^2261772 is an apocalyptic number.

It is an amenable number.

2261772 is an abundant number, since it is smaller than the sum of its proper divisors (3455576).

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

2261772 is a wasteful number, since it uses less digits than its factorization.

2261772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62837 (or 62832 counting only the distinct ones).

The product of its digits is 2352, while the sum is 27.

The square root of 2261772 is about 1503.9188807911. The cubic root of 2261772 is about 131.2652009605.

The spelling of 2261772 in words is "two million, two hundred sixty-one thousand, seven hundred seventy-two".