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421164 = 223211699
BaseRepresentation
bin1100110110100101100
3210101201200
41212310230
5101434124
613005500
73402612
oct1466454
9711650
10421164
11268477
12183890
13119913
14ad6b2
1584bc9
hex66d2c

421164 has 18 divisors (see below), whose sum is σ = 1064700. Its totient is φ = 140376.

The previous prime is 421163. The next prime is 421177. The reversal of 421164 is 461124.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×4211642 = 354758229792, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (421163) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5814 + ... + 5885.

It is an arithmetic number, because the mean of its divisors is an integer number (59150).

2421164 is an apocalyptic number.

It is an amenable number.

421164 is an abundant number, since it is smaller than the sum of its proper divisors (643536).

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

421164 is a wasteful number, since it uses less digits than its factorization.

421164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11709 (or 11704 counting only the distinct ones).

The product of its digits is 192, while the sum is 18.

The square root of 421164 is about 648.9714939811. The cubic root of 421164 is about 74.9578429749.

Adding to 421164 its reverse (461124), we get a palindrome (882288).

It can be divided in two parts, 421 and 164, that added together give a palindrome (585).

The spelling of 421164 in words is "four hundred twenty-one thousand, one hundred sixty-four".

Divisors: 1 2 3 4 6 9 12 18 36 11699 23398 35097 46796 70194 105291 140388 210582 421164