1228041472 has 72 divisors (see below), whose sum is σ = 2866799936. Its totient is φ = 514031616.

The previous prime is 1228041469. The next prime is 1228041541. The reversal of 1228041472 is 2741408221.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69088 + ... + 85024.

Almost surely, 2^1228041472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1228041472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1433399968).

1228041472 is an abundant number, since it is smaller than the sum of its proper divisors (1638758464).

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

1228041472 is an equidigital number, since it uses as much as digits as its factorization.

1228041472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16003 (or 15989 counting only the distinct ones).

The product of its (nonzero) digits is 7168, while the sum is 31.

The square root of 1228041472 is about 35043.4226638894. The cubic root of 1228041472 is about 1070.8722825637.

Adding to 1228041472 its reverse (2741408221), we get a palindrome (3969449693).

The spelling of 1228041472 in words is "one billion, two hundred twenty-eight million, forty-one thousand, four hundred seventy-two".