1220250684 has 48 divisors (see below), whose sum is σ = 3042966528. Its totient is φ = 379239168.

The previous prime is 1220250679. The next prime is 1220250751. The reversal of 1220250684 is 4860520221.

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, 6124 + ... + 49779.

It is an arithmetic number, because the mean of its divisors is an integer number (63395136).

Almost surely, 2^1220250684 is an apocalyptic number.

It is an amenable number.

1220250684 is an abundant number, since it is smaller than the sum of its proper divisors (1822715844).

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

1220250684 is a wasteful number, since it uses less digits than its factorization.

1220250684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56034 (or 56032 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 30.

The square root of 1220250684 is about 34932.0867398442. The cubic root of 1220250684 is about 1068.6029118325.

The spelling of 1220250684 in words is "one billion, two hundred twenty million, two hundred fifty thousand, six hundred eighty-four".