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13872968 = 231734121
BaseRepresentation
bin110100111010…
…111101001000
3222002211010122
4310322331020
512022413333
61213202412
7225626654
oct64727510
928084118
1013872968
117915a6a
124790408
132b49675
141bb1a64
151340798
hexd3af48

13872968 has 8 divisors (see below), whose sum is σ = 26011830. Its totient is φ = 6936480.

The previous prime is 13872959. The next prime is 13872973. The reversal of 13872968 is 86927831.

It can be written as a sum of positive squares in only one way, i.e., 13557124 + 315844 = 3682^2 + 562^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×138729682 = 384918482258048, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 867053 + ... + 867068.

Almost surely, 213872968 is an apocalyptic number.

It is an amenable number.

13872968 is a deficient number, since it is larger than the sum of its proper divisors (12138862).

13872968 is a wasteful number, since it uses less digits than its factorization.

13872968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734127 (or 1734123 counting only the distinct ones).

The product of its digits is 145152, while the sum is 44.

The square root of 13872968 is about 3724.6433386299. The cubic root of 13872968 is about 240.2830456865.

The spelling of 13872968 in words is "thirteen million, eight hundred seventy-two thousand, nine hundred sixty-eight".

Divisors: 1 2 4 8 1734121 3468242 6936484 13872968