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12494855 = 52498971
BaseRepresentation
bin101111101010…
…100000000111
3212111210201102
4233222200013
511144313410
61123450315
7211130102
oct57524007
925453642
1012494855
11706462a
12422699b
132786309
141933739
15116c2a5
hexbea807

12494855 has 4 divisors (see below), whose sum is σ = 14993832. Its totient is φ = 9995880.

The previous prime is 12494851. The next prime is 12494857. The reversal of 12494855 is 55849421.

12494855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 55849421 = 411362181.

It is not a de Polignac number, because 12494855 - 22 = 12494851 is a prime.

It is a super-2 number, since 2×124948552 = 312242802942050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12494851) 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, 1249481 + ... + 1249490.

It is an arithmetic number, because the mean of its divisors is an integer number (3748458).

Almost surely, 212494855 is an apocalyptic number.

12494855 is a deficient number, since it is larger than the sum of its proper divisors (2498977).

12494855 is an equidigital number, since it uses as much as digits as its factorization.

12494855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498976.

The product of its digits is 57600, while the sum is 38.

The square root of 12494855 is about 3534.8062181681. The cubic root of 12494855 is about 232.0475960116.

The spelling of 12494855 in words is "twelve million, four hundred ninety-four thousand, eight hundred fifty-five".

Divisors: 1 5 2498971 12494855