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40441220 = 22519310477
BaseRepresentation
bin1001101001000…
…1010110000100
32211002121220222
42122101112010
540323104340
64002443512
71000513301
oct232212604
984077828
1040441220
11209120a6
1211663598
1384bc621
14552a0a8
15383c8b5
hex2691584

40441220 has 24 divisors (see below), whose sum is σ = 85374744. Its totient is φ = 16091136.

The previous prime is 40441217. The next prime is 40441223. The reversal of 40441220 is 2214404.

It is an interprime number because it is at equal distance from previous prime (40441217) and next prime (40441223).

It can be written as a sum of positive squares in 4 ways, for example, as 4056196 + 36385024 = 2014^2 + 6032^2 .

It is not an unprimeable number, because it can be changed into a prime (40441223) 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, 1379 + ... + 9098.

It is an arithmetic number, because the mean of its divisors is an integer number (3557281).

Almost surely, 240441220 is an apocalyptic number.

It is an amenable number.

40441220 is an abundant number, since it is smaller than the sum of its proper divisors (44933524).

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

40441220 is a wasteful number, since it uses less digits than its factorization.

40441220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10679 (or 10677 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 40441220 is about 6359.3411608436. The cubic root of 40441220 is about 343.2480533052.

Adding to 40441220 its reverse (2214404), we get a palindrome (42655624).

The spelling of 40441220 in words is "forty million, four hundred forty-one thousand, two hundred twenty".

Divisors: 1 2 4 5 10 20 193 386 772 965 1930 3860 10477 20954 41908 52385 104770 209540 2022061 4044122 8088244 10110305 20220610 40441220