1228633544 has 32 divisors (see below), whose sum is σ = 2379724920. Its totient is φ = 594233856.

The previous prime is 1228633501. The next prime is 1228633547. The reversal of 1228633544 is 4453368221.

It can be written as a sum of positive squares in 4 ways, for example, as 1124797444 + 103836100 = 33538^2 + 10190^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1228633498 and 1228633507.

It is not an unprimeable number, because it can be changed into a prime (1228633547) 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, 39212 + ... + 63204.

Almost surely, 2^1228633544 is an apocalyptic number.

It is an amenable number.

1228633544 is a deficient number, since it is larger than the sum of its proper divisors (1151091376).

1228633544 is a wasteful number, since it uses less digits than its factorization.

1228633544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24209 (or 24205 counting only the distinct ones).

The product of its digits is 138240, while the sum is 38.

The square root of 1228633544 is about 35051.8693367415. The cubic root of 1228633544 is about 1071.0443537412.

The spelling of 1228633544 in words is "one billion, two hundred twenty-eight million, six hundred thirty-three thousand, five hundred forty-four".