Search a number
-
+
12730454 = 21123139181
BaseRepresentation
bin110000100100…
…000001010110
3212221202220022
4300210001112
511224333304
61132505142
7213131012
oct60440126
925852808
1012730454
117205640
12431b1b2
132839619
141995542
1511b6ebe
hexc24056

12730454 has 32 divisors (see below), whose sum is σ = 22014720. Its totient is φ = 5464800.

The previous prime is 12730453. The next prime is 12730483. The reversal of 12730454 is 45403721.

It is a super-2 number, since 2×127304542 = 324128918092232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12730453) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70244 + ... + 70424.

It is an arithmetic number, because the mean of its divisors is an integer number (687960).

Almost surely, 212730454 is an apocalyptic number.

12730454 is a deficient number, since it is larger than the sum of its proper divisors (9284266).

12730454 is a wasteful number, since it uses less digits than its factorization.

12730454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 12730454 is about 3567.9761770505. The cubic root of 12730454 is about 233.4969958361.

The spelling of 12730454 in words is "twelve million, seven hundred thirty thousand, four hundred fifty-four".

Divisors: 1 2 11 22 23 46 139 181 253 278 362 506 1529 1991 3058 3197 3982 4163 6394 8326 25159 35167 45793 50318 70334 91586 276749 553498 578657 1157314 6365227 12730454