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405472 = 2512671
BaseRepresentation
bin1100010111111100000
3202121012111
41202333200
5100433342
612405104
73306064
oct1427740
9677174
10405472
11257701
12176794
13112732
14a7aa4
1580217
hex62fe0

405472 has 12 divisors (see below), whose sum is σ = 798336. Its totient is φ = 202720.

The previous prime is 405439. The next prime is 405473. The reversal of 405472 is 274504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405473) by changing a digit.

405472 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 as a sum of consecutive naturals, namely, 6304 + ... + 6367.

It is an arithmetic number, because the mean of its divisors is an integer number (66528).

2405472 is an apocalyptic number.

It is an amenable number.

405472 is a deficient number, since it is larger than the sum of its proper divisors (392864).

405472 is a wasteful number, since it uses less digits than its factorization.

405472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12681 (or 12673 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 405472 is about 636.7668333071. The cubic root of 405472 is about 74.0150930986.

Subtracting from 405472 its sum of digits (22), we obtain a triangular number (405450 = T900).

Adding to 405472 its reverse (274504), we get a palindrome (679976).

The spelling of 405472 in words is "four hundred five thousand, four hundred seventy-two".

Divisors: 1 2 4 8 16 32 12671 25342 50684 101368 202736 405472