1228764 has 12 divisors (see below), whose sum is σ = 2867144. Its totient is φ = 409584.

The previous prime is 1228763. The next prime is 1228783. The reversal of 1228764 is 4678221.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1228763) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51187 + ... + 51210.

2^1228764 is an apocalyptic number.

It is an amenable number.

1228764 is an abundant number, since it is smaller than the sum of its proper divisors (1638380).

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

1228764 is a wasteful number, since it uses less digits than its factorization.

1228764 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 102404 (or 102402 counting only the distinct ones).

The product of its digits is 5376, while the sum is 30.

The square root of 1228764 is about 1108.4962787488. The cubic root of 1228764 is about 107.1082260139.

The spelling of 1228764 in words is "one million, two hundred twenty-eight thousand, seven hundred sixty-four".