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404488 = 23731233
BaseRepresentation
bin1100010110000001000
3202112212001
41202300020
5100420423
612400344
73303160
oct1426010
9675761
10404488
11256997
121760b4
13112156
14a75a0
157ecad
hex62c08

404488 has 32 divisors (see below), whose sum is σ = 898560. Its totient is φ = 167040.

The previous prime is 404483. The next prime is 404489. The reversal of 404488 is 884404.

It is a happy number.

It is a super-2 number, since 2×4044882 = 327221084288, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404483) 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, 1620 + ... + 1852.

It is an arithmetic number, because the mean of its divisors is an integer number (28080).

2404488 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 404488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (449280).

404488 is an abundant number, since it is smaller than the sum of its proper divisors (494072).

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

404488 is a wasteful number, since it uses less digits than its factorization.

404488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277 (or 273 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 28.

The square root of 404488 is about 635.9937106607. The cubic root of 404488 is about 73.9551712902.

The spelling of 404488 in words is "four hundred four thousand, four hundred eighty-eight".

Divisors: 1 2 4 7 8 14 28 31 56 62 124 217 233 248 434 466 868 932 1631 1736 1864 3262 6524 7223 13048 14446 28892 50561 57784 101122 202244 404488