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144672037 = 388137277
BaseRepresentation
bin10001001111110…
…00010100100101
3101002020002201121
420213320110211
5244014001122
622204453541
73404456236
oct1047702445
9332202647
10144672037
1174733274
124054a2b1
1323c84a73
14152dd08d
15ca7abc7
hex89f8525

144672037 has 4 divisors (see below), whose sum is σ = 144713196. Its totient is φ = 144630880.

The previous prime is 144671999. The next prime is 144672041. The reversal of 144672037 is 730276441.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 730276441 = 3831906727.

It can be written as a sum of positive squares in 2 ways, for example, as 30481441 + 114190596 = 5521^2 + 10686^2 .

It is a cyclic number.

It is not a de Polignac number, because 144672037 - 219 = 144147749 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 144671993 and 144672011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (144672337) 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, 14758 + ... + 22519.

It is an arithmetic number, because the mean of its divisors is an integer number (36178299).

Almost surely, 2144672037 is an apocalyptic number.

It is an amenable number.

144672037 is a deficient number, since it is larger than the sum of its proper divisors (41159).

144672037 is an equidigital number, since it uses as much as digits as its factorization.

144672037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41158.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 144672037 is about 12027.9689474159. The cubic root of 144672037 is about 524.9624003307.

The spelling of 144672037 in words is "one hundred forty-four million, six hundred seventy-two thousand, thirty-seven".

Divisors: 1 3881 37277 144672037