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404220444 = 223291161553
BaseRepresentation
bin11000000101111…
…110101000011100
31001011121112012120
4120011332220130
51311440023234
6104035502540
713005550155
oct3005765034
91034545176
10404220444
11198198891
12b3457a50
136598b5c4
143b98292c
1525749049
hex1817ea1c

404220444 has 24 divisors (see below), whose sum is σ = 975705360. Its totient is φ = 130093824.

The previous prime is 404220433. The next prime is 404220451. The reversal of 404220444 is 444022404.

It is a congruent number.

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, 580429 + ... + 581124.

It is an arithmetic number, because the mean of its divisors is an integer number (40654390).

Almost surely, 2404220444 is an apocalyptic number.

It is an amenable number.

404220444 is an abundant number, since it is smaller than the sum of its proper divisors (571484916).

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

404220444 is a wasteful number, since it uses less digits than its factorization.

404220444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161589 (or 1161587 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

The square root of 404220444 is about 20105.2342438480. The cubic root of 404220444 is about 739.3886135910.

Adding to 404220444 its reverse (444022404), we get a palindrome (848242848).

The spelling of 404220444 in words is "four hundred four million, two hundred twenty thousand, four hundred forty-four".

Divisors: 1 2 3 4 6 12 29 58 87 116 174 348 1161553 2323106 3484659 4646212 6969318 13938636 33685037 67370074 101055111 134740148 202110222 404220444