1212803460 has 288 divisors, whose sum is σ = 4296644352. Its totient is φ = 273653760.

The previous prime is 1212803453. The next prime is 1212803467. The reversal of 1212803460 is 643082121.

1212803460 is a `hidden beast` number, since 121 + 2 + 80 + 3 + 460 = 666.

It is an interprime number because it is at equal distance from previous prime (1212803453) and next prime (1212803467).

It is not an unprimeable number, because it can be changed into a prime (1212803467) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4611289 + ... + 4611551.

It is an arithmetic number, because the mean of its divisors is an integer number (14918904).

Almost surely, 2^1212803460 is an apocalyptic number.

1212803460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1212803460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2148322176).

1212803460 is an abundant number, since it is smaller than the sum of its proper divisors (3083840892).

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

1212803460 is a wasteful number, since it uses less digits than its factorization.

1212803460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 443 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1212803460 is about 34825.3278520102. The cubic root of 1212803460 is about 1066.4245698394.

Adding to 1212803460 its reverse (643082121), we get a palindrome (1855885581).

The spelling of 1212803460 in words is "one billion, two hundred twelve million, eight hundred three thousand, four hundred sixty".