265138692 has 144 divisors (see below), whose sum is σ = 806722560. Its totient is φ = 66178944.

The previous prime is 265138669. The next prime is 265138693. The reversal of 265138692 is 296831562.

265138692 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is not an unprimeable number, because it can be changed into a prime (265138693) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 269233 + ... + 270215.

It is an arithmetic number, because the mean of its divisors is an integer number (5602240).

Almost surely, 2^265138692 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 265138692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (403361280).

265138692 is an abundant number, since it is smaller than the sum of its proper divisors (541583868).

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

265138692 is a wasteful number, since it uses less digits than its factorization.

265138692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1042 (or 1027 counting only the distinct ones).

The product of its digits is 155520, while the sum is 42.

The square root of 265138692 is about 16283.0799297922. The cubic root of 265138692 is about 642.4278647434.

The spelling of 265138692 in words is "two hundred sixty-five million, one hundred thirty-eight thousand, six hundred ninety-two".