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380953 = 1722409
BaseRepresentation
bin1011101000000011001
3201100120101
41131000121
544142303
612055401
73144436
oct1350031
9640511
10380953
11240241
12164561
13104521
149cb8d
1577d1d
hex5d019

380953 has 4 divisors (see below), whose sum is σ = 403380. Its totient is φ = 358528.

The previous prime is 380951. The next prime is 380957. The reversal of 380953 is 359083.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 359083 = 419857.

It can be written as a sum of positive squares in 2 ways, for example, as 257049 + 123904 = 507^2 + 352^2 .

It is a cyclic number.

It is not a de Polignac number, because 380953 - 21 = 380951 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (380951) 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, 11188 + ... + 11221.

It is an arithmetic number, because the mean of its divisors is an integer number (100845).

2380953 is an apocalyptic number.

It is an amenable number.

380953 is a deficient number, since it is larger than the sum of its proper divisors (22427).

380953 is a wasteful number, since it uses less digits than its factorization.

380953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22426.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 380953 is about 617.2139013341. The cubic root of 380953 is about 72.4920641334.

The spelling of 380953 in words is "three hundred eighty thousand, nine hundred fifty-three".

Divisors: 1 17 22409 380953