1212685488 has 240 divisors, whose sum is σ = 4261870080. Its totient is φ = 313860096.

The previous prime is 1212685459. The next prime is 1212685499. The reversal of 1212685488 is 8845862121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 439120 + ... + 441872.

It is an arithmetic number, because the mean of its divisors is an integer number (17757792).

Almost surely, 2^1212685488 is an apocalyptic number.

1212685488 is a gapful number since it is divisible by the number (18) 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 1212685488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2130935040).

1212685488 is an abundant number, since it is smaller than the sum of its proper divisors (3049184592).

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

1212685488 is a wasteful number, since it uses less digits than its factorization.

1212685488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2816 (or 2807 counting only the distinct ones).

The product of its digits is 245760, while the sum is 45.

The square root of 1212685488 is about 34823.6340435630. The cubic root of 1212685488 is about 1066.3899909147.

It can be divided in two parts, 121268 and 5488, that added together give a triangular number (126756 = T₅₀₃).

The spelling of 1212685488 in words is "one billion, two hundred twelve million, six hundred eighty-five thousand, four hundred eighty-eight".