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233985 = 3519821
BaseRepresentation
bin111001001000000001
3102212222010
4321020001
524441420
65003133
71663113
oct711001
9385863
10233985
1114a884
12b34a9
138266b
14613b3
15494e0
hex39201

233985 has 16 divisors (see below), whose sum is σ = 394560. Its totient is φ = 118080.

The previous prime is 233983. The next prime is 233993. The reversal of 233985 is 589332.

It is a happy number.

It is not a de Polignac number, because 233985 - 21 = 233983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (233983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126 + ... + 695.

It is an arithmetic number, because the mean of its divisors is an integer number (24660).

It is a Proth number, since it is equal to 457 ⋅ 29 + 1 and 457 < 29.

2233985 is an apocalyptic number.

It is an amenable number.

233985 is a deficient number, since it is larger than the sum of its proper divisors (160575).

233985 is a wasteful number, since it uses less digits than its factorization.

233985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848.

The product of its digits is 6480, while the sum is 30.

The square root of 233985 is about 483.7199603076. The cubic root of 233985 is about 61.6210847314.

The spelling of 233985 in words is "two hundred thirty-three thousand, nine hundred eighty-five".

Divisors: 1 3 5 15 19 57 95 285 821 2463 4105 12315 15599 46797 77995 233985