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130287669 = 379549737
BaseRepresentation
bin1111100010000…
…00100000110101
3100002011022002020
413301000200311
5231323201134
620532303353
73141266301
oct761004065
9302138066
10130287669
11675a9066
1237771b59
1320cb96c5
1413436d01
15b688b49
hex7c40835

130287669 has 8 divisors (see below), whose sum is σ = 175916160. Its totient is φ = 85758816.

The previous prime is 130287667. The next prime is 130287671. The reversal of 130287669 is 966782031.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (130287667) and next prime (130287671).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 130287669 - 21 = 130287667 is a prime.

It is a super-2 number, since 2×1302876692 = 33949753386907122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 130287669.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130287667) 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 7 ways as a sum of consecutive naturals, for example, 274632 + ... + 275105.

It is an arithmetic number, because the mean of its divisors is an integer number (21989520).

Almost surely, 2130287669 is an apocalyptic number.

It is an amenable number.

130287669 is a deficient number, since it is larger than the sum of its proper divisors (45628491).

130287669 is an equidigital number, since it uses as much as digits as its factorization.

130287669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549819.

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 130287669 is about 11414.3624000642. The cubic root of 130287669 is about 506.9530863150.

The spelling of 130287669 in words is "one hundred thirty million, two hundred eighty-seven thousand, six hundred sixty-nine".

Divisors: 1 3 79 237 549737 1649211 43429223 130287669