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12748938 = 234753853
BaseRepresentation
bin110000101000…
…100010001010
3212222201020220
4300220202022
511230431223
61133130510
7213235626
oct60504212
925881226
1012748938
117218514
124329a36
132844b67
14199c186
1511bc6e3
hexc2888a

12748938 has 32 divisors (see below), whose sum is σ = 26562816. Its totient is φ = 4075968.

The previous prime is 12748937. The next prime is 12748987. The reversal of 12748938 is 83984721.

It is a self number, because there is not a number n which added to its sum of digits gives 12748938.

It is not an unprimeable number, because it can be changed into a prime (12748933) 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, 14520 + ... + 15372.

It is an arithmetic number, because the mean of its divisors is an integer number (830088).

Almost surely, 212748938 is an apocalyptic number.

12748938 is an abundant number, since it is smaller than the sum of its proper divisors (13813878).

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

12748938 is a wasteful number, since it uses less digits than its factorization.

12748938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958.

The product of its digits is 96768, while the sum is 42.

The square root of 12748938 is about 3570.5655014297. The cubic root of 12748938 is about 233.6099499460.

It can be divided in two parts, 127 and 48938, that multiplied together give a palindrome (6215126).

The spelling of 12748938 in words is "twelve million, seven hundred forty-eight thousand, nine hundred thirty-eight".

Divisors: 1 2 3 6 47 53 94 106 141 159 282 318 853 1706 2491 2559 4982 5118 7473 14946 40091 45209 80182 90418 120273 135627 240546 271254 2124823 4249646 6374469 12748938