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233385641 = 1361171481
BaseRepresentation
bin11011110100100…
…10111010101001
3121021011012220122
431322102322221
5434221320031
635054133025
75532513416
oct1572227251
9537135818
10233385641
1110a8160a5
12661b1175
1339476318
1422dd310d
151575147b
hexde92ea9

233385641 has 4 divisors (see below), whose sum is σ = 233558484. Its totient is φ = 233212800.

The previous prime is 233385631. The next prime is 233385661. The reversal of 233385641 is 146583332.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 77510416 + 155875225 = 8804^2 + 12485^2 .

It is a cyclic number.

It is not a de Polignac number, because 233385641 - 210 = 233384617 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (233385611) 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, 84380 + ... + 87101.

It is an arithmetic number, because the mean of its divisors is an integer number (58389621).

Almost surely, 2233385641 is an apocalyptic number.

It is an amenable number.

233385641 is a deficient number, since it is larger than the sum of its proper divisors (172843).

233385641 is a wasteful number, since it uses less digits than its factorization.

233385641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172842.

The product of its digits is 51840, while the sum is 35.

The square root of 233385641 is about 15276.9643908729. The cubic root of 233385641 is about 615.6842504269.

The spelling of 233385641 in words is "two hundred thirty-three million, three hundred eighty-five thousand, six hundred forty-one".

Divisors: 1 1361 171481 233385641