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421804 = 22176203
BaseRepresentation
bin1100110111110101100
3210102121101
41212332230
5101444204
613012444
73404515
oct1467654
9712541
10421804
112689a9
12184124
13119cb6
14ada0c
1584ea4
hex66fac

421804 has 12 divisors (see below), whose sum is σ = 781704. Its totient is φ = 198464.

The previous prime is 421801. The next prime is 421807. The reversal of 421804 is 408124.

It is an interprime number because it is at equal distance from previous prime (421801) and next prime (421807).

It is a super-2 number, since 2×4218042 = 355837228832, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (421801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3034 + ... + 3169.

It is an arithmetic number, because the mean of its divisors is an integer number (65142).

2421804 is an apocalyptic number.

It is an amenable number.

421804 is a deficient number, since it is larger than the sum of its proper divisors (359900).

421804 is a wasteful number, since it uses less digits than its factorization.

421804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6224 (or 6222 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 421804 is about 649.4643947131. The cubic root of 421804 is about 74.9957923565.

Adding to 421804 its reverse (408124), we get a palindrome (829928).

It can be divided in two parts, 421 and 804, that added together give a triangular number (1225 = T49).

The spelling of 421804 in words is "four hundred twenty-one thousand, eight hundred four".

Divisors: 1 2 4 17 34 68 6203 12406 24812 105451 210902 421804