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13988232 = 2332238447
BaseRepresentation
bin110101010111…
…000110001000
3222022200020200
4311113012020
512040110412
61215452200
7226620006
oct65270610
928280220
1013988232
117994625
124827060
132b89c7b
141c01a76
1513649dc
hexd57188

13988232 has 48 divisors (see below), whose sum is σ = 39536640. Its totient is φ = 4459488.

The previous prime is 13988231. The next prime is 13988243. The reversal of 13988232 is 23288931.

It is a happy number.

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

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (13988231) 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 11 ways as a sum of consecutive naturals, for example, 2568 + ... + 5879.

It is an arithmetic number, because the mean of its divisors is an integer number (823680).

Almost surely, 213988232 is an apocalyptic number.

13988232 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

13988232 is an abundant number, since it is smaller than the sum of its proper divisors (25548408).

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

13988232 is a wasteful number, since it uses less digits than its factorization.

13988232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8482 (or 8475 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 13988232 is about 3740.0844910242. The cubic root of 13988232 is about 240.9466775966.

The spelling of 13988232 in words is "thirteen million, nine hundred eighty-eight thousand, two hundred thirty-two".

Divisors: 1 2 3 4 6 8 9 12 18 23 24 36 46 69 72 92 138 184 207 276 414 552 828 1656 8447 16894 25341 33788 50682 67576 76023 101364 152046 194281 202728 304092 388562 582843 608184 777124 1165686 1554248 1748529 2331372 3497058 4662744 6994116 13988232