1223895628 has 12 divisors (see below), whose sum is σ = 2142112000. Its totient is φ = 611863632.

The previous prime is 1223895623. The next prime is 1223895649. The reversal of 1223895628 is 8265983221.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1223895623) 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, 20998 + ... + 53746.

Almost surely, 2^1223895628 is an apocalyptic number.

It is an amenable number.

1223895628 is a deficient number, since it is larger than the sum of its proper divisors (918216372).

1223895628 is a wasteful number, since it uses less digits than its factorization.

1223895628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42096 (or 42094 counting only the distinct ones).

The product of its digits is 414720, while the sum is 46.

The square root of 1223895628 is about 34984.2196997446. The cubic root of 1223895628 is about 1069.6658426078.

The spelling of 1223895628 in words is "one billion, two hundred twenty-three million, eight hundred ninety-five thousand, six hundred twenty-eight".