235920138 has 16 divisors (see below), whose sum is σ = 472175040. Its totient is φ = 78584256.

The previous prime is 235920107. The next prime is 235920187. The reversal of 235920138 is 831029532.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 235920099 and 235920108.

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, 4270 + ... + 22137.

It is an arithmetic number, because the mean of its divisors is an integer number (29510940).

Almost surely, 2^235920138 is an apocalyptic number.

235920138 is an abundant number, since it is smaller than the sum of its proper divisors (236254902).

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

235920138 is a wasteful number, since it uses less digits than its factorization.

235920138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27901.

The product of its (nonzero) digits is 12960, while the sum is 33.

The square root of 235920138 is about 15359.6919890993. The cubic root of 235920138 is about 617.9049455296.

The spelling of 235920138 in words is "two hundred thirty-five million, nine hundred twenty thousand, one hundred thirty-eight".