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13948845 = 353132971
BaseRepresentation
bin110101001101…
…011110101101
3222020200012220
4311031132231
512032330340
61214545553
7226364121
oct65153655
928220186
1013948845
117967a79
1248082b9
132b75071
141bd1581
151357ed0
hexd4d7ad

13948845 has 16 divisors (see below), whose sum is σ = 22396992. Its totient is φ = 7413120.

The previous prime is 13948843. The next prime is 13948859. The reversal of 13948845 is 54884931.

It is not a de Polignac number, because 13948845 - 21 = 13948843 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 13948797 and 13948806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13948843) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3210 + ... + 6180.

It is an arithmetic number, because the mean of its divisors is an integer number (1399812).

Almost surely, 213948845 is an apocalyptic number.

13948845 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

13948845 is a deficient number, since it is larger than the sum of its proper divisors (8448147).

13948845 is a wasteful number, since it uses less digits than its factorization.

13948845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3292.

The product of its digits is 138240, while the sum is 42.

The square root of 13948845 is about 3734.8152564752. The cubic root of 13948845 is about 240.7203185642.

It can be divided in two parts, 139 and 48845, that added together give a palindrome (48984).

The spelling of 13948845 in words is "thirteen million, nine hundred forty-eight thousand, eight hundred forty-five".

Divisors: 1 3 5 15 313 939 1565 2971 4695 8913 14855 44565 929923 2789769 4649615 13948845