818831472 has 40 divisors (see below), whose sum is σ = 2188260240. Its totient is φ = 263531520.

The previous prime is 818831411. The next prime is 818831473. The reversal of 818831472 is 274138818.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818831473) 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, 292729 + ... + 295512.

It is an arithmetic number, because the mean of its divisors is an integer number (54706506).

Almost surely, 2^818831472 is an apocalyptic number.

It is an amenable number.

818831472 is an abundant number, since it is smaller than the sum of its proper divisors (1369428768).

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

818831472 is a wasteful number, since it uses less digits than its factorization.

818831472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588281 (or 588275 counting only the distinct ones).

The product of its digits is 86016, while the sum is 42.

The square root of 818831472 is about 28615.2314685728. The cubic root of 818831472 is about 935.5453449732.

The spelling of 818831472 in words is "eight hundred eighteen million, eight hundred thirty-one thousand, four hundred seventy-two".