814440252 has 24 divisors (see below), whose sum is σ = 1940795136. Its totient is φ = 265703728.

The previous prime is 814440251. The next prime is 814440257. The reversal of 814440252 is 252044418.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (814440251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 721458 + ... + 722585.

It is an arithmetic number, because the mean of its divisors is an integer number (80866464).

Almost surely, 2^814440252 is an apocalyptic number.

It is an amenable number.

814440252 is an abundant number, since it is smaller than the sum of its proper divisors (1126354884).

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

814440252 is a wasteful number, since it uses less digits than its factorization.

814440252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1444097 (or 1444095 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 30.

The square root of 814440252 is about 28538.3996047431. The cubic root of 814440252 is about 933.8699692274.

The spelling of 814440252 in words is "eight hundred fourteen million, four hundred forty thousand, two hundred fifty-two".