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12690083 = 71812869
BaseRepresentation
bin110000011010…
…001010100011
3212212201112002
4300122022203
511222040313
61131554215
7212602220
oct60321243
925781462
1012690083
11718827a
1242bb96b
132824133
141984947
1511aa058
hexc1a2a3

12690083 has 4 divisors (see below), whose sum is σ = 14502960. Its totient is φ = 10877208.

The previous prime is 12690077. The next prime is 12690103. The reversal of 12690083 is 38009621.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12690083 - 26 = 12690019 is a prime.

It is a super-2 number, since 2×126900832 = 322076413093778, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12690053) 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, 906428 + ... + 906441.

It is an arithmetic number, because the mean of its divisors is an integer number (3625740).

Almost surely, 212690083 is an apocalyptic number.

12690083 is a deficient number, since it is larger than the sum of its proper divisors (1812877).

12690083 is an equidigital number, since it uses as much as digits as its factorization.

12690083 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1812876.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 12690083 is about 3562.3142758606. The cubic root of 12690083 is about 233.2499114482.

It can be divided in two parts, 126 and 90083, that added together give a palindrome (90209).

The spelling of 12690083 in words is "twelve million, six hundred ninety thousand, eighty-three".

Divisors: 1 7 1812869 12690083