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230400785 = 5113407789
BaseRepresentation
bin11011011101110…
…10001100010001
3121001112120110102
431232322030101
5432440311120
634510142145
75465242256
oct1556721421
9531476412
10230400785
1110906757a
12651b1955
133896c834
142285742d
1515361d75
hexdbba311

230400785 has 8 divisors (see below), whose sum is σ = 278928360. Its totient is φ = 182689024.

The previous prime is 230400763. The next prime is 230400823. The reversal of 230400785 is 587004032.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 32126224 + 198274561 = 5668^2 + 14081^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 230400785 - 210 = 230399761 is a prime.

It is a nialpdrome in base 16.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203330 + ... + 204459.

It is an arithmetic number, because the mean of its divisors is an integer number (34866045).

Almost surely, 2230400785 is an apocalyptic number.

It is an amenable number.

230400785 is a deficient number, since it is larger than the sum of its proper divisors (48527575).

230400785 is a wasteful number, since it uses less digits than its factorization.

230400785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 407907.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 230400785 is about 15178.9586269941. The cubic root of 230400785 is about 613.0482421558.

The spelling of 230400785 in words is "two hundred thirty million, four hundred thousand, seven hundred eighty-five".

Divisors: 1 5 113 565 407789 2038945 46080157 230400785