865240272 has 80 divisors (see below), whose sum is σ = 2674620480. Its totient is φ = 266226048.

The previous prime is 865240241. The next prime is 865240303. The reversal of 865240272 is 272042568.

It is an interprime number because it is at equal distance from previous prime (865240241) and next prime (865240303).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71418 + ... + 82649.

It is an arithmetic number, because the mean of its divisors is an integer number (33432756).

Almost surely, 2^865240272 is an apocalyptic number.

It is an amenable number.

865240272 is an abundant number, since it is smaller than the sum of its proper divisors (1809380208).

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

865240272 is a wasteful number, since it uses less digits than its factorization.

865240272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154097 (or 154085 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 865240272 is about 29414.9668026330. The cubic root of 865240272 is about 952.8961561237.

The spelling of 865240272 in words is "eight hundred sixty-five million, two hundred forty thousand, two hundred seventy-two".