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12440413 = 174671567
BaseRepresentation
bin101111011101…
…001101011101
3212102001001001
4233131031131
511141043123
61122350301
7210512266
oct57351535
925361031
1012440413
117027737
1241bb391
1327675bb
14191b96d
15115b0ad
hexbdd35d

12440413 has 8 divisors (see below), whose sum is σ = 13208832. Its totient is φ = 11676096.

The previous prime is 12440411. The next prime is 12440423. The reversal of 12440413 is 31404421.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12440413 - 21 = 12440411 is a prime.

It is a super-2 number, since 2×124404132 = 309527751221138, 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 (12440411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7156 + ... + 8722.

It is an arithmetic number, because the mean of its divisors is an integer number (1651104).

Almost surely, 212440413 is an apocalyptic number.

It is an amenable number.

12440413 is a deficient number, since it is larger than the sum of its proper divisors (768419).

12440413 is a wasteful number, since it uses less digits than its factorization.

12440413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2051.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 12440413 is about 3527.0969649274. The cubic root of 12440413 is about 231.7100830130.

Adding to 12440413 its reverse (31404421), we get a palindrome (43844834).

The spelling of 12440413 in words is "twelve million, four hundred forty thousand, four hundred thirteen".

Divisors: 1 17 467 1567 7939 26639 731789 12440413