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13915412 = 227270997
BaseRepresentation
bin110101000101…
…010100010100
3222011222100122
4311011110110
512030243122
61214131112
7226164500
oct65052424
928158318
1013915412
117944945
1247b0a98
132b62a94
141bc3300
15134d142
hexd45514

13915412 has 18 divisors (see below), whose sum is σ = 28328202. Its totient is φ = 5963664.

The previous prime is 13915397. The next prime is 13915427. The reversal of 13915412 is 21451931.

It is an interprime number because it is at equal distance from previous prime (13915397) and next prime (13915427).

It can be written as a sum of positive squares in only one way, i.e., 8317456 + 5597956 = 2884^2 + 2366^2 .

It is a super-3 number, since 3×139154123 (a number of 22 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 35303 + ... + 35694.

It is an arithmetic number, because the mean of its divisors is an integer number (1573789).

Almost surely, 213915412 is an apocalyptic number.

It is an amenable number.

13915412 is an abundant number, since it is smaller than the sum of its proper divisors (14412790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13915412 is a wasteful number, since it uses less digits than its factorization.

13915412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71015 (or 71006 counting only the distinct ones).

The product of its digits is 1080, while the sum is 26.

The square root of 13915412 is about 3730.3367140246. The cubic root of 13915412 is about 240.5278428698.

It can be divided in two parts, 139 and 15412, that added together give a palindrome (15551).

The spelling of 13915412 in words is "thirteen million, nine hundred fifteen thousand, four hundred twelve".

Divisors: 1 2 4 7 14 28 49 98 196 70997 141994 283988 496979 993958 1987916 3478853 6957706 13915412