1233161272 has 32 divisors (see below), whose sum is σ = 2644034400. Its totient is φ = 528188544.

The previous prime is 1233161263. The next prime is 1233161297. The reversal of 1233161272 is 2721613321.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a self number, because there is not a number n which added to its sum of digits gives 1233161272.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 108198 + ... + 119050.

It is an arithmetic number, because the mean of its divisors is an integer number (82626075).

Almost surely, 2^1233161272 is an apocalyptic number.

It is an amenable number.

1233161272 is an abundant number, since it is smaller than the sum of its proper divisors (1410873128).

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

1233161272 is a wasteful number, since it uses less digits than its factorization.

1233161272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12895 (or 12891 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 1233161272 is about 35116.3960565432. The cubic root of 1233161272 is about 1072.3584023828.

Adding to 1233161272 its reverse (2721613321), we get a palindrome (3954774593).

The spelling of 1233161272 in words is "one billion, two hundred thirty-three million, one hundred sixty-one thousand, two hundred seventy-two".