243151272 has 384 divisors, whose sum is σ = 896313600. Its totient is φ = 57729024.

The previous prime is 243151261. The next prime is 243151297. The reversal of 243151272 is 272151342.

243151272 is a `hidden beast` number, since 243 + 151 + 272 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 4121179 + ... + 4121237.

It is an arithmetic number, because the mean of its divisors is an integer number (2334150).

Almost surely, 2^243151272 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 243151272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (448156800).

243151272 is an abundant number, since it is smaller than the sum of its proper divisors (653162328).

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

243151272 is a wasteful number, since it uses less digits than its factorization.

243151272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145 (or 138 counting only the distinct ones).

The product of its digits is 3360, while the sum is 27.

The square root of 243151272 is about 15593.3085648941. The cubic root of 243151272 is about 624.1546091251.

The spelling of 243151272 in words is "two hundred forty-three million, one hundred fifty-one thousand, two hundred seventy-two".