1223624040 has 64 divisors (see below), whose sum is σ = 3770098560. Its totient is φ = 317479680.

The previous prime is 1223624027. The next prime is 1223624041. The reversal of 1223624040 is 404263221.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 1223624040.

It is not an unprimeable number, because it can be changed into a prime (1223624041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 133356 + ... + 142235.

It is an arithmetic number, because the mean of its divisors is an integer number (58907790).

Almost surely, 2^1223624040 is an apocalyptic number.

1223624040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1223624040 is an abundant number, since it is smaller than the sum of its proper divisors (2546474520).

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

1223624040 is a wasteful number, since it uses less digits than its factorization.

1223624040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275642 (or 275638 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 24.

The square root of 1223624040 is about 34980.3379057436. The cubic root of 1223624040 is about 1069.5867155180.

Adding to 1223624040 its reverse (404263221), we get a palindrome (1627887261).

The spelling of 1223624040 in words is "one billion, two hundred twenty-three million, six hundred twenty-four thousand, forty".