1220732008 has 16 divisors (see below), whose sum is σ = 2291288580. Its totient is φ = 609721728.

The previous prime is 1220731951. The next prime is 1220732017. The reversal of 1220732008 is 8002370221.

It can be written as a sum of positive squares in 2 ways, for example, as 1183497604 + 37234404 = 34402^2 + 6102^2 .

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, 72435 + ... + 87682.

Almost surely, 2^1220732008 is an apocalyptic number.

It is an amenable number.

1220732008 is a deficient number, since it is larger than the sum of its proper divisors (1070556572).

1220732008 is a wasteful number, since it uses less digits than its factorization.

1220732008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161076 (or 161072 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 1220732008 is about 34938.9754858382. The cubic root of 1220732008 is about 1068.7433957026.

The spelling of 1220732008 in words is "one billion, two hundred twenty million, seven hundred thirty-two thousand, eight".