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144087629 = 720583947
BaseRepresentation
bin10001001011010…
…01101001001101
3101001010102001212
420211221221031
5243341301004
622144144205
73366503360
oct1045515115
9331112055
10144087629
1174374194
1240308065
1323b0ba6a
14151ca0d7
15c9b296e
hex8969a4d

144087629 has 4 divisors (see below), whose sum is σ = 164671584. Its totient is φ = 123503676.

The previous prime is 144087623. The next prime is 144087641. The reversal of 144087629 is 926780441.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 144087629 - 28 = 144087373 is a prime.

It is a super-2 number, since 2×1440876292 = 41522489661683282, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144087623) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 10291967 + ... + 10291980.

It is an arithmetic number, because the mean of its divisors is an integer number (41167896).

Almost surely, 2144087629 is an apocalyptic number.

It is an amenable number.

144087629 is a deficient number, since it is larger than the sum of its proper divisors (20583955).

144087629 is an equidigital number, since it uses as much as digits as its factorization.

144087629 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20583954.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 144087629 is about 12003.6506530305. The cubic root of 144087629 is about 524.2545780915.

The spelling of 144087629 in words is "one hundred forty-four million, eighty-seven thousand, six hundred twenty-nine".

Divisors: 1 7 20583947 144087629