1214755872 has 96 divisors (see below), whose sum is σ = 3563590464. Its totient is φ = 359116800.

The previous prime is 1214755853. The next prime is 1214755901. The reversal of 1214755872 is 2785574121.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 29268 + ... + 57324.

It is an arithmetic number, because the mean of its divisors is an integer number (37120734).

Almost surely, 2^1214755872 is an apocalyptic number.

1214755872 is a gapful number since it is divisible by the number (12) 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 1214755872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1781795232).

1214755872 is an abundant number, since it is smaller than the sum of its proper divisors (2348834592).

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

1214755872 is a wasteful number, since it uses less digits than its factorization.

1214755872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28122 (or 28114 counting only the distinct ones).

The product of its digits is 156800, while the sum is 42.

The square root of 1214755872 is about 34853.3480744677. The cubic root of 1214755872 is about 1066.9965184735.

The spelling of 1214755872 in words is "one billion, two hundred fourteen million, seven hundred fifty-five thousand, eight hundred seventy-two".