840267252 has 72 divisors (see below), whose sum is σ = 2329078752. Its totient is φ = 253310400.

The previous prime is 840267251. The next prime is 840267271. The reversal of 840267252 is 252762048.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (840267251) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 72627 + ... + 83397.

It is an arithmetic number, because the mean of its divisors is an integer number (32348316).

Almost surely, 2^840267252 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 840267252, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1164539376).

840267252 is an abundant number, since it is smaller than the sum of its proper divisors (1488811500).

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

840267252 is a wasteful number, since it uses less digits than its factorization.

840267252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10989 (or 10984 counting only the distinct ones).

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

The square root of 840267252 is about 28987.3636607402. The cubic root of 840267252 is about 943.6388499889.

The spelling of 840267252 in words is "eight hundred forty million, two hundred sixty-seven thousand, two hundred fifty-two".