2211284 has 6 divisors (see below), whose sum is σ = 3869754. Its totient is φ = 1105640.

The previous prime is 2211281. The next prime is 2211329. The reversal of 2211284 is 4821122.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 1690000 + 521284 = 1300^2 + 722^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2211281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 276407 + ... + 276414.

It is an arithmetic number, because the mean of its divisors is an integer number (644959).

2^2211284 is an apocalyptic number.

It is an amenable number.

2211284 is a deficient number, since it is larger than the sum of its proper divisors (1658470).

2211284 is a wasteful number, since it uses less digits than its factorization.

2211284 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 552825 (or 552823 counting only the distinct ones).

The product of its digits is 256, while the sum is 20.

The square root of 2211284 is about 1487.0386679572. The cubic root of 2211284 is about 130.2811273191.

The spelling of 2211284 in words is "two million, two hundred eleven thousand, two hundred eighty-four".