1228824681 has 32 divisors (see below), whose sum is σ = 1896162048. Its totient is φ = 693350400.

The previous prime is 1228824679. The next prime is 1228824721. The reversal of 1228824681 is 1864288221.

It is not a de Polignac number, because 1228824681 - 2¹ = 1228824679 is a prime.

It is a super-2 number, since 2×1228824681² = 3020020193269503522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1228824281) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1257265 + ... + 1258241.

It is an arithmetic number, because the mean of its divisors is an integer number (59255064).

Almost surely, 2^1228824681 is an apocalyptic number.

It is an amenable number.

1228824681 is a deficient number, since it is larger than the sum of its proper divisors (667337367).

1228824681 is a wasteful number, since it uses less digits than its factorization.

1228824681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681.

The product of its digits is 98304, while the sum is 42.

The square root of 1228824681 is about 35054.5957186786. The cubic root of 1228824681 is about 1071.0998912096.

The spelling of 1228824681 in words is "one billion, two hundred twenty-eight million, eight hundred twenty-four thousand, six hundred eighty-one".