1224302640 has 160 divisors (see below), whose sum is σ = 4241728512. Its totient is φ = 289536000.

The previous prime is 1224302593. The next prime is 1224302647. The reversal of 1224302640 is 462034221.

1224302640 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a hoax number, since the sum of its digits (24) coincides with the sum of the digits of its distinct prime factors.

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 1224302640.

It is not an unprimeable number, because it can be changed into a prime (1224302647) 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, 102585 + ... + 113895.

Almost surely, 2^1224302640 is an apocalyptic number.

1224302640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1224302640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2120864256).

1224302640 is an abundant number, since it is smaller than the sum of its proper divisors (3017425872).

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

1224302640 is a wasteful number, since it uses less digits than its factorization.

1224302640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11379 (or 11373 counting only the distinct ones).

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

The square root of 1224302640 is about 34990.0362960658. The cubic root of 1224302640 is about 1069.7844035297.

Adding to 1224302640 its reverse (462034221), we get a palindrome (1686336861).

The spelling of 1224302640 in words is "one billion, two hundred twenty-four million, three hundred two thousand, six hundred forty".