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12450641 = 71778663
BaseRepresentation
bin101111011111…
…101101010001
3212102120001212
4233133231101
511141410031
61122505505
7210554150
oct57375521
925376055
1012450641
117034395
124205295
13276c158
141921597
15115e12b
hexbdfb51

12450641 has 4 divisors (see below), whose sum is σ = 14229312. Its totient is φ = 10671972.

The previous prime is 12450619. The next prime is 12450653. The reversal of 12450641 is 14605421.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 14605421 = 90716103.

It is a cyclic number.

It is not a de Polignac number, because 12450641 - 26 = 12450577 is a prime.

It is a super-2 number, since 2×124506412 = 310036922621762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12450671) 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, 889325 + ... + 889338.

It is an arithmetic number, because the mean of its divisors is an integer number (3557328).

Almost surely, 212450641 is an apocalyptic number.

It is an amenable number.

12450641 is a deficient number, since it is larger than the sum of its proper divisors (1778671).

12450641 is an equidigital number, since it uses as much as digits as its factorization.

12450641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778670.

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 12450641 is about 3528.5465846436. The cubic root of 12450641 is about 231.7735664772.

The spelling of 12450641 in words is "twelve million, four hundred fifty thousand, six hundred forty-one".

Divisors: 1 7 1778663 12450641