1220608844 has 24 divisors (see below), whose sum is σ = 2629004448. Its totient is φ = 482878080.

The previous prime is 1220608819. The next prime is 1220608867. The reversal of 1220608844 is 4488060221.

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

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, 1676297 + ... + 1677024.

It is an arithmetic number, because the mean of its divisors is an integer number (109541852).

Almost surely, 2^1220608844 is an apocalyptic number.

1220608844 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

1220608844 is an abundant number, since it is smaller than the sum of its proper divisors (1408395604).

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

1220608844 is a wasteful number, since it uses less digits than its factorization.

1220608844 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3353345 (or 3353343 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 35.

The square root of 1220608844 is about 34937.2128825412. The cubic root of 1220608844 is about 1068.7074513845.

The spelling of 1220608844 in words is "one billion, two hundred twenty million, six hundred eight thousand, eight hundred forty-four".