1212580860 has 24 divisors (see below), whose sum is σ = 3395226576. Its totient is φ = 323354880.

The previous prime is 1212580849. The next prime is 1212580867. The reversal of 1212580860 is 680852121.

1212580860 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1212580867) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10104781 + ... + 10104900.

It is an arithmetic number, because the mean of its divisors is an integer number (141467774).

Almost surely, 2^1212580860 is an apocalyptic number.

1212580860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1212580860 is an abundant number, since it is smaller than the sum of its proper divisors (2182645716).

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

1212580860 is a wasteful number, since it uses less digits than its factorization.

1212580860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20209693 (or 20209691 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 33.

The square root of 1212580860 is about 34822.1317555373. The cubic root of 1212580860 is about 1066.3593213904.

The spelling of 1212580860 in words is "one billion, two hundred twelve million, five hundred eighty thousand, eight hundred sixty".