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12692401 = 29541809
BaseRepresentation
bin110000011010…
…101110110001
3212212211200221
4300122232301
511222124101
61132013041
7212612041
oct60325661
925784627
1012692401
117189a97
124301181
1328251c7
141985721
1511aaaa1
hexc1abb1

12692401 has 8 divisors (see below), whose sum is σ = 13170600. Its totient is φ = 12216960.

The previous prime is 12692371. The next prime is 12692429. The reversal of 12692401 is 10429621.

12692401 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 3686400 + 9006001 = 1920^2 + 3001^2 .

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 12692401 - 213 = 12684209 is a prime.

It is a super-2 number, since 2×126924012 = 322194086289602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12692101) 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, 15285 + ... + 16093.

It is an arithmetic number, because the mean of its divisors is an integer number (1646325).

Almost surely, 212692401 is an apocalyptic number.

It is an amenable number.

12692401 is a deficient number, since it is larger than the sum of its proper divisors (478199).

12692401 is an equidigital number, since it uses as much as digits as its factorization.

12692401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 12692401 is about 3562.6396112995. The cubic root of 12692401 is about 233.2641125735.

The spelling of 12692401 in words is "twelve million, six hundred ninety-two thousand, four hundred one".

Divisors: 1 29 541 809 15689 23461 437669 12692401