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4381237 = 7289413
BaseRepresentation
bin10000101101101000110101
322020120221001
4100231220311
52110144422
6233523301
752145200
oct20555065
98216831
104381237
112522763
121573531
13ba5263
14820937
155b8227
hex42da35

4381237 has 6 divisors (see below), whose sum is σ = 5096598. Its totient is φ = 3755304.

The previous prime is 4381187. The next prime is 4381249. The reversal of 4381237 is 7321834.

It can be written as a sum of positive squares in only one way, i.e., 3651921 + 729316 = 1911^2 + 854^2 .

It is not a de Polignac number, because 4381237 - 219 = 3856949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4381297) 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 5 ways as a sum of consecutive naturals, for example, 44658 + ... + 44755.

It is an arithmetic number, because the mean of its divisors is an integer number (849433).

Almost surely, 24381237 is an apocalyptic number.

It is an amenable number.

4381237 is a deficient number, since it is larger than the sum of its proper divisors (715361).

4381237 is an equidigital number, since it uses as much as digits as its factorization.

4381237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89427 (or 89420 counting only the distinct ones).

The product of its digits is 4032, while the sum is 28.

The square root of 4381237 is about 2093.1404635141. The cubic root of 4381237 is about 163.6309991414.

The spelling of 4381237 in words is "four million, three hundred eighty-one thousand, two hundred thirty-seven".

Divisors: 1 7 49 89413 625891 4381237