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252389 = 673767
BaseRepresentation
bin111101100111100101
3110211012202
4331213211
531034024
65224245
72100554
oct754745
9424182
10252389
11162695
12102085
138ab57
1467d9b
154ebae
hex3d9e5

252389 has 4 divisors (see below), whose sum is σ = 256224. Its totient is φ = 248556.

The previous prime is 252383. The next prime is 252391. The reversal of 252389 is 983252.

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 252389 - 212 = 248293 is a prime.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (252383) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1817 + ... + 1950.

It is an arithmetic number, because the mean of its divisors is an integer number (64056).

2252389 is an apocalyptic number.

It is an amenable number.

252389 is a deficient number, since it is larger than the sum of its proper divisors (3835).

252389 is an equidigital number, since it uses as much as digits as its factorization.

252389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3834.

The product of its digits is 4320, while the sum is 29.

The square root of 252389 is about 502.3833197868. The cubic root of 252389 is about 63.1960801126.

The spelling of 252389 in words is "two hundred fifty-two thousand, three hundred eighty-nine".

Divisors: 1 67 3767 252389