1220654036 has 12 divisors (see below), whose sum is σ = 2441308128. Its totient is φ = 523137432.

The previous prime is 1220654011. The next prime is 1220654131. The reversal of 1220654036 is 6304560221.

1220654036 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21797366 + ... + 21797421.

It is an arithmetic number, because the mean of its divisors is an integer number (203442344).

Almost surely, 2^1220654036 is an apocalyptic number.

It is an amenable number.

1220654036 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1220654036 is a wasteful number, since it uses less digits than its factorization.

1220654036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43594798 (or 43594796 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 1220654036 is about 34937.8596367894. The cubic root of 1220654036 is about 1068.7206405487.

The spelling of 1220654036 in words is "one billion, two hundred twenty million, six hundred fifty-four thousand, thirty-six".