418044820 has 12 divisors (see below), whose sum is σ = 877894164. Its totient is φ = 167217920.

The previous prime is 418044797. The next prime is 418044899. The reversal of 418044820 is 28440814.

It can be written as a sum of positive squares in 2 ways, for example, as 270470916 + 147573904 = 16446^2 + 12148^2 .

It is a super-2 number, since 2×418044820² = 349522943057664800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10451101 + ... + 10451140.

It is an arithmetic number, because the mean of its divisors is an integer number (73157847).

Almost surely, 2^418044820 is an apocalyptic number.

It is an amenable number.

418044820 is an abundant number, since it is smaller than the sum of its proper divisors (459849344).

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

418044820 is a wasteful number, since it uses less digits than its factorization.

418044820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20902250 (or 20902248 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 31.

The square root of 418044820 is about 20446.1443798091. The cubic root of 418044820 is about 747.7233599095.

The spelling of 418044820 in words is "four hundred eighteen million, forty-four thousand, eight hundred twenty".