265870140 has 96 divisors (see below), whose sum is σ = 791913024. Its totient is φ = 66416640.

The previous prime is 265870139. The next prime is 265870141. The reversal of 265870140 is 41078562.

265870140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (265870139) and next prime (265870141).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265870141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 282070 + ... + 283010.

It is an arithmetic number, because the mean of its divisors is an integer number (8249094).

Almost surely, 2^265870140 is an apocalyptic number.

265870140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 265870140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (395956512).

265870140 is an abundant number, since it is smaller than the sum of its proper divisors (526042884).

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

265870140 is a wasteful number, since it uses less digits than its factorization.

265870140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247 (or 1245 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 265870140 is about 16305.5248305597. The cubic root of 265870140 is about 643.0180855592.

The spelling of 265870140 in words is "two hundred sixty-five million, eight hundred seventy thousand, one hundred forty".