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13479948 = 2232374443
BaseRepresentation
bin110011011011…
…000000001100
3221100212000100
4303123000030
511422324243
61200531100
7222402066
oct63330014
927325010
1013479948
117677759
124620a90
132a3c801
141b0c736
1512b40d3
hexcdb00c

13479948 has 18 divisors (see below), whose sum is σ = 34074404. Its totient is φ = 4493304.

The previous prime is 13479943. The next prime is 13479979. The reversal of 13479948 is 84997431.

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (13479943) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 187186 + ... + 187257.

Almost surely, 213479948 is an apocalyptic number.

13479948 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

13479948 is an abundant number, since it is smaller than the sum of its proper divisors (20594456).

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

13479948 is a wasteful number, since it uses less digits than its factorization.

13479948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374453 (or 374448 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 13479948 is about 3671.5048685791. The cubic root of 13479948 is about 237.9922083931.

The spelling of 13479948 in words is "thirteen million, four hundred seventy-nine thousand, nine hundred forty-eight".

Divisors: 1 2 3 4 6 9 12 18 36 374443 748886 1123329 1497772 2246658 3369987 4493316 6739974 13479948