1228063872 has 96 divisors (see below), whose sum is σ = 3794681520. Its totient is φ = 350870016.

The previous prime is 1228063849. The next prime is 1228063873. The reversal of 1228063872 is 2783608221.

It is a tau number, because it is divible by the number of its divisors (96).

It is a self number, because there is not a number n which added to its sum of digits gives 1228063872.

It is not an unprimeable number, because it can be changed into a prime (1228063873) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13818 + ... + 51449.

Almost surely, 2^1228063872 is an apocalyptic number.

1228063872 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1228063872 is an abundant number, since it is smaller than the sum of its proper divisors (2566617648).

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

1228063872 is an equidigital number, since it uses as much as digits as its factorization.

1228063872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65298 (or 65279 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 1228063872 is about 35043.7422659167. The cubic root of 1228063872 is about 1070.8787935798.

The spelling of 1228063872 in words is "one billion, two hundred twenty-eight million, sixty-three thousand, eight hundred seventy-two".