1227251896 has 64 divisors (see below), whose sum is σ = 2641826880. Its totient is φ = 529459200.

The previous prime is 1227251873. The next prime is 1227251897. The reversal of 1227251896 is 6981527221.

It is a super-2 number, since 2×1227251896² = 3012294432471189632, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1227251897) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 264670 + ... + 269266.

It is an arithmetic number, because the mean of its divisors is an integer number (41278545).

Almost surely, 2^1227251896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1227251896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1320913440).

1227251896 is an abundant number, since it is smaller than the sum of its proper divisors (1414574984).

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

1227251896 is a wasteful number, since it uses less digits than its factorization.

1227251896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4784 (or 4780 counting only the distinct ones).

The product of its digits is 120960, while the sum is 43.

The square root of 1227251896 is about 35032.1551720701. The cubic root of 1227251896 is about 1070.6427256225.

The spelling of 1227251896 in words is "one billion, two hundred twenty-seven million, two hundred fifty-one thousand, eight hundred ninety-six".