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12498431 = 111136221
BaseRepresentation
bin101111101011…
…010111111111
3212111222121212
4233223113333
511144422211
61123515035
7211143401
oct57532777
925458555
1012498431
117067290
124228a7b
132787b2a
141934b71
15116d38b
hexbeb5ff

12498431 has 4 divisors (see below), whose sum is σ = 13634664. Its totient is φ = 11362200.

The previous prime is 12498427. The next prime is 12498433. The reversal of 12498431 is 13489421.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 13489421 = 111226311.

It is a cyclic number.

It is not a de Polignac number, because 12498431 - 22 = 12498427 is a prime.

It is a super-2 number, since 2×124984312 = 312421554923522, which contains 22 as substring.

It is a Duffinian number.

It is a zygodrome in base 5.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12498433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 568100 + ... + 568121.

It is an arithmetic number, because the mean of its divisors is an integer number (3408666).

Almost surely, 212498431 is an apocalyptic number.

12498431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12498431 is a deficient number, since it is larger than the sum of its proper divisors (1136233).

12498431 is a wasteful number, since it uses less digits than its factorization.

12498431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136232.

The product of its digits is 6912, while the sum is 32.

The square root of 12498431 is about 3535.3120088615. The cubic root of 12498431 is about 232.0697310705.

The spelling of 12498431 in words is "twelve million, four hundred ninety-eight thousand, four hundred thirty-one".

Divisors: 1 11 1136221 12498431