1226204428 has 12 divisors (see below), whose sum is σ = 2239156080. Its totient is φ = 586445552.

The previous prime is 1226204417. The next prime is 1226204437. The reversal of 1226204428 is 8244026221.

It is a self number, because there is not a number n which added to its sum of digits gives 1226204428.

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, 6664063 + ... + 6664246.

It is an arithmetic number, because the mean of its divisors is an integer number (186596340).

Almost surely, 2^1226204428 is an apocalyptic number.

It is an amenable number.

1226204428 is a deficient number, since it is larger than the sum of its proper divisors (1012951652).

1226204428 is a wasteful number, since it uses less digits than its factorization.

1226204428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13328336 (or 13328334 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 31.

The square root of 1226204428 is about 35017.2018870726. The cubic root of 1226204428 is about 1070.3380385927.

The spelling of 1226204428 in words is "one billion, two hundred twenty-six million, two hundred four thousand, four hundred twenty-eight".