418820 has 24 divisors (see below), whose sum is σ = 901824. Its totient is φ = 163296.

The previous prime is 418819. The next prime is 418837. The reversal of 418820 is 28814.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 418820.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 617 + ... + 1103.

It is an arithmetic number, because the mean of its divisors is an integer number (37576).

2⁴¹⁸⁸²⁰ 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 418820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (450912).

418820 is an abundant number, since it is smaller than the sum of its proper divisors (483004).

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

418820 is a wasteful number, since it uses less digits than its factorization.

418820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 539 (or 537 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 418820 is about 647.1630397357. The cubic root of 418820 is about 74.8185242043.

The spelling of 418820 in words is "four hundred eighteen thousand, eight hundred twenty".