1294221228 has 24 divisors (see below), whose sum is σ = 3062384640. Its totient is φ = 425330640.

The previous prime is 1294221223. The next prime is 1294221277. The reversal of 1294221228 is 8221224921.

It is not an unprimeable number, because it can be changed into a prime (1294221221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 758668 + ... + 760371.

It is an arithmetic number, because the mean of its divisors is an integer number (127599360).

Almost surely, 2^1294221228 is an apocalyptic number.

It is an amenable number.

1294221228 is an abundant number, since it is smaller than the sum of its proper divisors (1768163412).

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

1294221228 is a wasteful number, since it uses less digits than its factorization.

1294221228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1519117 (or 1519115 counting only the distinct ones).

The product of its digits is 9216, while the sum is 33.

The square root of 1294221228 is about 35975.2863504934. The cubic root of 1294221228 is about 1089.7733243534.

The spelling of 1294221228 in words is "one billion, two hundred ninety-four million, two hundred twenty-one thousand, two hundred twenty-eight".