1224890836 has 12 divisors (see below), whose sum is σ = 2308448212. Its totient is φ = 565334208.

The previous prime is 1224890827. The next prime is 1224890839. The reversal of 1224890836 is 6380984221.

It can be written as a sum of positive squares in 2 ways, for example, as 820478736 + 404412100 = 28644^2 + 20110^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1224890792 and 1224890801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224890839) 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, 11777745 + ... + 11777848.

Almost surely, 2^1224890836 is an apocalyptic number.

It is an amenable number.

1224890836 is a deficient number, since it is larger than the sum of its proper divisors (1083557376).

1224890836 is a wasteful number, since it uses less digits than its factorization.

1224890836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23555610 (or 23555608 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 43.

The square root of 1224890836 is about 34998.4404795414. The cubic root of 1224890836 is about 1069.9556961887.

The spelling of 1224890836 in words is "one billion, two hundred twenty-four million, eight hundred ninety thousand, eight hundred thirty-six".