1214198656 has 128 divisors (see below), whose sum is σ = 2735003520. Its totient is φ = 532224000.

The previous prime is 1214198639. The next prime is 1214198663. The reversal of 1214198656 is 6568914121.

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is an unprimeable number.

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, 5754391 + ... + 5754601.

It is an arithmetic number, because the mean of its divisors is an integer number (21367215).

Almost surely, 2^1214198656 is an apocalyptic number.

1214198656 is a gapful number since it is divisible by the number (16) 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 1214198656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1367501760).

1214198656 is an abundant number, since it is smaller than the sum of its proper divisors (1520804864).

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

1214198656 is a wasteful number, since it uses less digits than its factorization.

1214198656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364 (or 352 counting only the distinct ones).

The product of its digits is 103680, while the sum is 43.

The square root of 1214198656 is about 34845.3534348556. The cubic root of 1214198656 is about 1066.8333475636.

The spelling of 1214198656 in words is "one billion, two hundred fourteen million, one hundred ninety-eight thousand, six hundred fifty-six".