1220873460 has 48 divisors (see below), whose sum is σ = 3510842496. Its totient is φ = 316766592.

The previous prime is 1220873453. The next prime is 1220873461. The reversal of 1220873460 is 643780221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220873461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 272752 + ... + 277191.

It is an arithmetic number, because the mean of its divisors is an integer number (73142552).

Almost surely, 2^1220873460 is an apocalyptic number.

1220873460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220873460 is an abundant number, since it is smaller than the sum of its proper divisors (2289969036).

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

1220873460 is a wasteful number, since it uses less digits than its factorization.

1220873460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549992 (or 549990 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 1220873460 is about 34940.9996994934. Note that the first 3 decimals coincide. The cubic root of 1220873460 is about 1068.7846742281.

The spelling of 1220873460 in words is "one billion, two hundred twenty million, eight hundred seventy-three thousand, four hundred sixty".