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13943950 = 252278879
BaseRepresentation
bin110101001100…
…010010001110
3222020102111121
4311030102032
512032201300
61214511154
7226343626
oct65142216
928212447
1013943950
117964329
1248054ba
132b72a77
141bcd886
15135681a
hexd4c48e

13943950 has 12 divisors (see below), whose sum is σ = 25935840. Its totient is φ = 5577560.

The previous prime is 13943947. The next prime is 13943953. The reversal of 13943950 is 5934931.

It is an interprime number because it is at equal distance from previous prime (13943947) and next prime (13943953).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13943953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 139390 + ... + 139489.

It is an arithmetic number, because the mean of its divisors is an integer number (2161320).

Almost surely, 213943950 is an apocalyptic number.

13943950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13943950 is a deficient number, since it is larger than the sum of its proper divisors (11991890).

13943950 is a wasteful number, since it uses less digits than its factorization.

13943950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278891 (or 278886 counting only the distinct ones).

The product of its (nonzero) digits is 14580, while the sum is 34.

The square root of 13943950 is about 3734.1598787411. The cubic root of 13943950 is about 240.6921570015.

The spelling of 13943950 in words is "thirteen million, nine hundred forty-three thousand, nine hundred fifty".

Divisors: 1 2 5 10 25 50 278879 557758 1394395 2788790 6971975 13943950