1220975424 has 224 divisors, whose sum is σ = 3870228480. Its totient is φ = 376358400.

The previous prime is 1220975423. The next prime is 1220975467. The reversal of 1220975424 is 4245790221.

1220975424 is a `hidden beast` number, since 1 + 2 + 20 + 97 + 542 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220975423) 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, 1231569 + ... + 1232559.

Almost surely, 2^1220975424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1220975424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1935114240).

1220975424 is an abundant number, since it is smaller than the sum of its proper divisors (2649253056).

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

1220975424 is a wasteful number, since it uses less digits than its factorization.

1220975424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066 (or 1050 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 1220975424 is about 34942.4587572197. The cubic root of 1220975424 is about 1068.8144273872.

The spelling of 1220975424 in words is "one billion, two hundred twenty million, nine hundred seventy-five thousand, four hundred twenty-four".