1224778752 has 176 divisors, whose sum is σ = 3746828800. Its totient is φ = 394813440.

The previous prime is 1224778739. The next prime is 1224778769. The reversal of 1224778752 is 2578774221.

1224778752 is a `hidden beast` number, since 122 + 477 + 8 + 7 + 52 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1224778698 and 1224778707.

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, 856374 + ... + 857802.

It is an arithmetic number, because the mean of its divisors is an integer number (21288800).

Almost surely, 2^1224778752 is an apocalyptic number.

1224778752 is a gapful number since it is divisible by the number (12) 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 1224778752, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1873414400).

1224778752 is an abundant number, since it is smaller than the sum of its proper divisors (2522050048).

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

1224778752 is a wasteful number, since it uses less digits than its factorization.

1224778752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489 (or 1465 counting only the distinct ones).

The product of its digits is 439040, while the sum is 45.

The square root of 1224778752 is about 34996.8391715595. The cubic root of 1224778752 is about 1069.9230596552.

The spelling of 1224778752 in words is "one billion, two hundred twenty-four million, seven hundred seventy-eight thousand, seven hundred fifty-two".