1220031984 has 40 divisors (see below), whose sum is σ = 3169989072. Its totient is φ = 404323840.

The previous prime is 1220031949. The next prime is 1220032057. The reversal of 1220031984 is 4891300221.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65157 + ... + 81764.

Almost surely, 2^1220031984 is an apocalyptic number.

It is an amenable number.

1220031984 is an abundant number, since it is smaller than the sum of its proper divisors (1949957088).

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

1220031984 is a wasteful number, since it uses less digits than its factorization.

1220031984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147105 (or 147099 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 30.

The square root of 1220031984 is about 34928.9562397733. The cubic root of 1220031984 is about 1068.5390677325.

The spelling of 1220031984 in words is "one billion, two hundred twenty million, thirty-one thousand, nine hundred eighty-four".