1224579380 has 48 divisors (see below), whose sum is σ = 2677417680. Its totient is φ = 470043648.

The previous prime is 1224579379. The next prime is 1224579443. The reversal of 1224579380 is 839754221.

It can be written as a sum of positive squares in 8 ways, for example, as 278155684 + 946423696 = 16678^2 + 30764^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 42686 + ... + 65354.

It is an arithmetic number, because the mean of its divisors is an integer number (55779535).

Almost surely, 2^1224579380 is an apocalyptic number.

1224579380 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 1224579380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1338708840).

1224579380 is an abundant number, since it is smaller than the sum of its proper divisors (1452838300).

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

1224579380 is a wasteful number, since it uses less digits than its factorization.

1224579380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22788 (or 22786 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 1224579380 is about 34993.9906269634. The cubic root of 1224579380 is about 1069.8650017474.

The spelling of 1224579380 in words is "one billion, two hundred twenty-four million, five hundred seventy-nine thousand, three hundred eighty".