1228697884 has 12 divisors (see below), whose sum is σ = 2180506608. Its totient is φ = 605696000.

The previous prime is 1228697861. The next prime is 1228697891. The reversal of 1228697884 is 4887968221.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2162917 + ... + 2163484.

It is an arithmetic number, because the mean of its divisors is an integer number (181708884).

Almost surely, 2^1228697884 is an apocalyptic number.

It is an amenable number.

1228697884 is a deficient number, since it is larger than the sum of its proper divisors (951808724).

1228697884 is a wasteful number, since it uses less digits than its factorization.

1228697884 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4326476 (or 4326474 counting only the distinct ones).

The product of its digits is 3096576, while the sum is 55.

The square root of 1228697884 is about 35052.7871074470. The cubic root of 1228697884 is about 1071.0630492509.

The spelling of 1228697884 in words is "one billion, two hundred twenty-eight million, six hundred ninety-seven thousand, eight hundred eighty-four".