818074404 has 135 divisors (see below), whose sum is σ = 2498776203. Its totient is φ = 232705872.

The previous prime is 818074399. The next prime is 818074421. The reversal of 818074404 is 404470818.

It is a happy number.

The square root of 818074404 is 28602.

It is a perfect power (a square), and thus also a powerful number.

818074404 is a `hidden beast` number, since 8 + 180 + 74 + 404 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 44 ways as a sum of consecutive naturals, for example, 3603739 + ... + 3603965.

Almost surely, 2^818074404 is an apocalyptic number.

818074404 is a gapful number since it is divisible by the number (84) formed by its first and last digit.

818074404 is the 28602-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 818074404

818074404 is an abundant number, since it is smaller than the sum of its proper divisors (1680701799).

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

818074404 is a wasteful number, since it uses less digits than its factorization.

818074404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 484 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The cubic root of 818074404 is about 935.2569299728.

Multiplying 818074404 by its sum of digits (36), we get a square (29450678544 = 171612²).

818074404 divided by its sum of digits (36) gives a square (22724289 = 4767²).

The spelling of 818074404 in words is "eight hundred eighteen million, seventy-four thousand, four hundred four".