1235972238 has 16 divisors (see below), whose sum is σ = 2513842560. Its totient is φ = 405007736.

The previous prime is 1235972237. The next prime is 1235972273. The reversal of 1235972238 is 8322795321.

It is a self number, because there is not a number n which added to its sum of digits gives 1235972238.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1235972237) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1745370 + ... + 1746077.

It is an arithmetic number, because the mean of its divisors is an integer number (157115160).

Almost surely, 2^1235972238 is an apocalyptic number.

1235972238 is an abundant number, since it is smaller than the sum of its proper divisors (1277870322).

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

1235972238 is a wasteful number, since it uses less digits than its factorization.

1235972238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3491511.

The product of its digits is 181440, while the sum is 42.

The square root of 1235972238 is about 35156.3968290267. The cubic root of 1235972238 is about 1073.1725904322.

The spelling of 1235972238 in words is "one billion, two hundred thirty-five million, nine hundred seventy-two thousand, two hundred thirty-eight".