1224145400 has 24 divisors (see below), whose sum is σ = 2846138520. Its totient is φ = 489658080.

The previous prime is 1224145331. The next prime is 1224145411. The reversal of 1224145400 is 45414221.

It is a super-3 number, since 3×1224145400³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3060164 + ... + 3060563.

It is an arithmetic number, because the mean of its divisors is an integer number (118589105).

Almost surely, 2^1224145400 is an apocalyptic number.

1224145400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1224145400 is an abundant number, since it is smaller than the sum of its proper divisors (1621993120).

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

1224145400 is a wasteful number, since it uses less digits than its factorization.

1224145400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6120743 (or 6120734 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 1224145400 is about 34987.7892985539. The cubic root of 1224145400 is about 1069.7386032795.

Adding to 1224145400 its reverse (45414221), we get a palindrome (1269559621).

The spelling of 1224145400 in words is "one billion, two hundred twenty-four million, one hundred forty-five thousand, four hundred".