1220534000 has 80 divisors (see below), whose sum is σ = 3372897216. Its totient is φ = 418464000.

The previous prime is 1220533999. The next prime is 1220534033. The reversal of 1220534000 is 4350221.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 1220534000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29591 + ... + 57590.

Almost surely, 2^1220534000 is an apocalyptic number.

1220534000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1220534000 is an abundant number, since it is smaller than the sum of its proper divisors (2152363216).

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

1220534000 is an equidigital number, since it uses as much as digits as its factorization.

1220534000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87211 (or 87195 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 17.

The square root of 1220534000 is about 34936.1417446174. The cubic root of 1220534000 is about 1068.6856076476.

Adding to 1220534000 its reverse (4350221), we get a palindrome (1224884221).

The spelling of 1220534000 in words is "one billion, two hundred twenty million, five hundred thirty-four thousand".