1220455276 has 12 divisors (see below), whose sum is σ = 2136489208. Its totient is φ = 610029792.

The previous prime is 1220455267. The next prime is 1220455303. The reversal of 1220455276 is 6725540221.

It is a super-2 number, since 2×1220455276² = 2979022161432472352, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35121 + ... + 60616.

Almost surely, 2^1220455276 is an apocalyptic number.

It is an amenable number.

1220455276 is a deficient number, since it is larger than the sum of its proper divisors (916033932).

1220455276 is a wasteful number, since it uses less digits than its factorization.

1220455276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98928 (or 98926 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 34.

The square root of 1220455276 is about 34935.0150422180. The cubic root of 1220455276 is about 1068.6626305423.

Adding to 1220455276 its reverse (6725540221), we get a palindrome (7945995497).

The spelling of 1220455276 in words is "one billion, two hundred twenty million, four hundred fifty-five thousand, two hundred seventy-six".