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12530413 = 71790059
BaseRepresentation
bin101111110011…
…001011101101
3212120121111101
4233303023231
511201433123
61124323101
7211335550
oct57631355
925517441
1012530413
117089315
124243491
13279955c
141942697
151177aad
hexbf32ed

12530413 has 4 divisors (see below), whose sum is σ = 14320480. Its totient is φ = 10740348.

The previous prime is 12530393. The next prime is 12530429. The reversal of 12530413 is 31403521.

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.

It is a cyclic number.

It is not a de Polignac number, because 12530413 - 25 = 12530381 is a prime.

It is a super-2 number, since 2×125304132 = 314022499901138, which contains 22 as substring.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12530213) 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, 895023 + ... + 895036.

It is an arithmetic number, because the mean of its divisors is an integer number (3580120).

Almost surely, 212530413 is an apocalyptic number.

It is an amenable number.

12530413 is a deficient number, since it is larger than the sum of its proper divisors (1790067).

12530413 is an equidigital number, since it uses as much as digits as its factorization.

12530413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1790066.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 12530413 is about 3539.8323406625. The cubic root of 12530413 is about 232.2675087597.

Adding to 12530413 its reverse (31403521), we get a palindrome (43933934).

The spelling of 12530413 in words is "twelve million, five hundred thirty thousand, four hundred thirteen".

Divisors: 1 7 1790059 12530413