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13469472 = 253246769
BaseRepresentation
bin110011011000…
…011100100000
3221100022122100
4303120130200
511422010342
61200410400
7222326412
oct63303440
927308570
1013469472
11766a8a5
124616a00
132a37b03
141b089b2
1512b0e4c
hexcd8720

13469472 has 36 divisors (see below), whose sum is σ = 38304630. Its totient is φ = 4489728.

The previous prime is 13469459. The next prime is 13469483. The reversal of 13469472 is 27496431.

It can be written as a sum of positive squares in only one way, i.e., 12702096 + 767376 = 3564^2 + 876^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 23097 + ... + 23672.

Almost surely, 213469472 is an apocalyptic number.

13469472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13469472 is an abundant number, since it is smaller than the sum of its proper divisors (24835158).

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

13469472 is a wasteful number, since it uses less digits than its factorization.

13469472 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46785 (or 46774 counting only the distinct ones).

The product of its digits is 36288, while the sum is 36.

The square root of 13469472 is about 3670.0779283280. The cubic root of 13469472 is about 237.9305401897.

The spelling of 13469472 in words is "thirteen million, four hundred sixty-nine thousand, four hundred seventy-two".

Divisors: 1 2 3 4 6 8 9 12 16 18 24 32 36 48 72 96 144 288 46769 93538 140307 187076 280614 374152 420921 561228 748304 841842 1122456 1496608 1683684 2244912 3367368 4489824 6734736 13469472