1230172272 has 100 divisors (see below), whose sum is σ = 4069144816. Its totient is φ = 351475200.

The previous prime is 1230172253. The next prime is 1230172289. The reversal of 1230172272 is 2722710321.

It is a Harshad number since it is a multiple of its sum of digits (27).

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 19 ways as a sum of consecutive naturals, for example, 58729 + ... + 76872.

Almost surely, 2^1230172272 is an apocalyptic number.

1230172272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1230172272 is an abundant number, since it is smaller than the sum of its proper divisors (2838972544).

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

1230172272 is a wasteful number, since it uses less digits than its factorization.

1230172272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135628 (or 135613 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 1230172272 is about 35073.8117688967. The cubic root of 1230172272 is about 1071.4912888544.

Adding to 1230172272 its reverse (2722710321), we get a palindrome (3952882593).

The spelling of 1230172272 in words is "one billion, two hundred thirty million, one hundred seventy-two thousand, two hundred seventy-two".