1220420344 has 64 divisors (see below), whose sum is σ = 2846521440. Its totient is φ = 481935360.

The previous prime is 1220420329. The next prime is 1220420363. The reversal of 1220420344 is 4430240221.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

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, 11929 + ... + 50824.

Almost surely, 2^1220420344 is an apocalyptic number.

It is an amenable number.

1220420344 is an abundant number, since it is smaller than the sum of its proper divisors (1626101096).

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

1220420344 is a wasteful number, since it uses less digits than its factorization.

1220420344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62800 (or 62796 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 1220420344 is about 34934.5150817927. The cubic root of 1220420344 is about 1068.6524346534.

Adding to 1220420344 its reverse (4430240221), we get a palindrome (5650660565).

The spelling of 1220420344 in words is "one billion, two hundred twenty million, four hundred twenty thousand, three hundred forty-four".