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131682692 = 2219291193
BaseRepresentation
bin1111101100101…
…01000110000100
3100011210011200202
413312111012010
5232202321232
621022230032
73156166361
oct766250604
9304704622
10131682692
1168371179
1238125318
132138766b
14136bb468
15b862162
hex7d95184

131682692 has 18 divisors (see below), whose sum is σ = 243214398. Its totient is φ = 62375328.

The previous prime is 131682601. The next prime is 131682701. The reversal of 131682692 is 296286131.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 123121216 + 8561476 = 11096^2 + 2926^2 .

It is a Harshad number since it is a multiple of its sum of digits (38).

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 in 5 ways as a sum of consecutive naturals, for example, 44153 + ... + 47040.

It is an arithmetic number, because the mean of its divisors is an integer number (13511911).

Almost surely, 2131682692 is an apocalyptic number.

It is an amenable number.

131682692 is a deficient number, since it is larger than the sum of its proper divisors (111531706).

131682692 is a wasteful number, since it uses less digits than its factorization.

131682692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91235 (or 91214 counting only the distinct ones).

The product of its digits is 31104, while the sum is 38.

The square root of 131682692 is about 11475.3079261517. The cubic root of 131682692 is about 508.7560249776.

The spelling of 131682692 in words is "one hundred thirty-one million, six hundred eighty-two thousand, six hundred ninety-two".

Divisors: 1 2 4 19 38 76 361 722 1444 91193 182386 364772 1732667 3465334 6930668 32920673 65841346 131682692