1220455970 has 8 divisors (see below), whose sum is σ = 2196820764. Its totient is φ = 488182384.

The previous prime is 1220455967. The next prime is 1220455997. The reversal of 1220455970 is 795540221.

It can be written as a sum of positive squares in 2 ways, for example, as 1182053161 + 38402809 = 34381^2 + 6197^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1220455970.

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, 61022789 + ... + 61022808.

Almost surely, 2^1220455970 is an apocalyptic number.

1220455970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1220455970 is a deficient number, since it is larger than the sum of its proper divisors (976364794).

1220455970 is a wasteful number, since it uses less digits than its factorization.

1220455970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122045604.

The product of its (nonzero) digits is 25200, while the sum is 35.

The square root of 1220455970 is about 34935.0249749446. The cubic root of 1220455970 is about 1068.6628331038.

The spelling of 1220455970 in words is "one billion, two hundred twenty million, four hundred fifty-five thousand, nine hundred seventy".