1228857544 has 16 divisors (see below), whose sum is σ = 2305624320. Its totient is φ = 614024400.

The previous prime is 1228857541. The next prime is 1228857557. The reversal of 1228857544 is 4457588221.

It is a super-3 number, since 3×1228857544³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1228857494 and 1228857503.

It is not an unprimeable number, because it can be changed into a prime (1228857541) 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, 37432 + ... + 62119.

It is an arithmetic number, because the mean of its divisors is an integer number (144101520).

Almost surely, 2^1228857544 is an apocalyptic number.

It is an amenable number.

1228857544 is a deficient number, since it is larger than the sum of its proper divisors (1076766776).

1228857544 is a wasteful number, since it uses less digits than its factorization.

1228857544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101100 (or 101096 counting only the distinct ones).

The product of its digits is 716800, while the sum is 46.

The square root of 1228857544 is about 35055.0644557958. The cubic root of 1228857544 is about 1071.1094394233.

The spelling of 1228857544 in words is "one billion, two hundred twenty-eight million, eight hundred fifty-seven thousand, five hundred forty-four".