1220340488 has 8 divisors (see below), whose sum is σ = 2288138430. Its totient is φ = 610170240.

The previous prime is 1220340469. The next prime is 1220340497. The reversal of 1220340488 is 8840430221.

It can be written as a sum of positive squares in only one way, i.e., 822657124 + 397683364 = 28682^2 + 19942^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 76271273 + ... + 76271288.

Almost surely, 2^1220340488 is an apocalyptic number.

It is an amenable number.

1220340488 is a deficient number, since it is larger than the sum of its proper divisors (1067797942).

1220340488 is a wasteful number, since it uses less digits than its factorization.

1220340488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152542567 (or 152542563 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 1220340488 is about 34933.3721246604. The cubic root of 1220340488 is about 1068.6291256980.

The spelling of 1220340488 in words is "one billion, two hundred twenty million, three hundred forty thousand, four hundred eighty-eight".