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421544 = 23232979
BaseRepresentation
bin1100110111010101000
3210102020202
41212322220
5101442134
613011332
73403664
oct1467250
9712222
10421544
11268792
12183b48
13119b46
14ad8a4
1584d7e
hex66ea8

421544 has 32 divisors (see below), whose sum is σ = 864000. Its totient is φ = 192192.

The previous prime is 421517. The next prime is 421559. The reversal of 421544 is 445124.

It is an unprimeable number.

421544 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5297 + ... + 5375.

It is an arithmetic number, because the mean of its divisors is an integer number (27000).

2421544 is an apocalyptic number.

It is an amenable number.

421544 is an abundant number, since it is smaller than the sum of its proper divisors (442456).

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

421544 is a wasteful number, since it uses less digits than its factorization.

421544 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137 (or 133 counting only the distinct ones).

The product of its digits is 640, while the sum is 20.

The square root of 421544 is about 649.2641989206. The cubic root of 421544 is about 74.9803800531.

Adding to 421544 its reverse (445124), we get a palindrome (866668).

The spelling of 421544 in words is "four hundred twenty-one thousand, five hundred forty-four".

Divisors: 1 2 4 8 23 29 46 58 79 92 116 158 184 232 316 632 667 1334 1817 2291 2668 3634 4582 5336 7268 9164 14536 18328 52693 105386 210772 421544