869241240 has 256 divisors, whose sum is σ = 3419136000. Its totient is φ = 192222720.

The previous prime is 869241239. The next prime is 869241251. The reversal of 869241240 is 42142968.

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

It is a junction number, because it is equal to n+sod(n) for n = 869241195 and 869241204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 232506 + ... + 236214.

It is an arithmetic number, because the mean of its divisors is an integer number (13356000).

Almost surely, 2^869241240 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 869241240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1709568000).

869241240 is an abundant number, since it is smaller than the sum of its proper divisors (2549894760).

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

869241240 is a wasteful number, since it uses less digits than its factorization.

869241240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3767 (or 3757 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 869241240 is about 29482.8974152813. The cubic root of 869241240 is about 954.3626642196.

The spelling of 869241240 in words is "eight hundred sixty-nine million, two hundred forty-one thousand, two hundred forty".