1224886420 has 12 divisors (see below), whose sum is σ = 2572261524. Its totient is φ = 489954560.

The previous prime is 1224886417. The next prime is 1224886423. The reversal of 1224886420 is 246884221.

It is an interprime number because it is at equal distance from previous prime (1224886417) and next prime (1224886423).

It can be written as a sum of positive squares in 2 ways, for example, as 737448336 + 487438084 = 27156^2 + 22078^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1224886420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224886423) 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, 30622141 + ... + 30622180.

It is an arithmetic number, because the mean of its divisors is an integer number (214355127).

Almost surely, 2^1224886420 is an apocalyptic number.

1224886420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1224886420 is an abundant number, since it is smaller than the sum of its proper divisors (1347375104).

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

1224886420 is a wasteful number, since it uses less digits than its factorization.

1224886420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61244330 (or 61244328 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 37.

The square root of 1224886420 is about 34998.3773909591. The cubic root of 1224886420 is about 1069.9544103789.

The spelling of 1224886420 in words is "one billion, two hundred twenty-four million, eight hundred eighty-six thousand, four hundred twenty".