1272959226 has 320 divisors, whose sum is σ = 3863946240. Its totient is φ = 303264000.

The previous prime is 1272959221. The next prime is 1272959251. The reversal of 1272959226 is 6229592721.

1272959226 is a `hidden beast` number, since 12 + 7 + 29 + 592 + 26 = 666.

It is not an unprimeable number, because it can be changed into a prime (1272959221) by changing a digit.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 9717181 + ... + 9717311.

It is an arithmetic number, because the mean of its divisors is an integer number (12074832).

Almost surely, 2^1272959226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1272959226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1931973120).

1272959226 is an abundant number, since it is smaller than the sum of its proper divisors (2590987014).

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

1272959226 is a wasteful number, since it uses less digits than its factorization.

1272959226 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 223 (or 214 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 1272959226 is about 35678.5541467140. The cubic root of 1272959226 is about 1083.7725934874.

The spelling of 1272959226 in words is "one billion, two hundred seventy-two million, nine hundred fifty-nine thousand, two hundred twenty-six".