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235071993 = 3136027487
BaseRepresentation
bin11100000001011…
…10100111111001
3121101022220011010
432000232213321
5440134300433
635154224133
75553036042
oct1600564771
9541286133
10235071993
11110768082
1266885049
1339916a70
14233118c9
1515985e63
hexe02e9f9

235071993 has 8 divisors (see below), whose sum is σ = 337539328. Its totient is φ = 144659664.

The previous prime is 235071973. The next prime is 235071997. The reversal of 235071993 is 399170532.

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

It is not a de Polignac number, because 235071993 - 25 = 235071961 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 6027487 = 235071993 / (2 + 3 + 5 + 0 + 7 + 1 + 9 + 9 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (235071997) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3013705 + ... + 3013782.

It is an arithmetic number, because the mean of its divisors is an integer number (42192416).

Almost surely, 2235071993 is an apocalyptic number.

It is an amenable number.

235071993 is a deficient number, since it is larger than the sum of its proper divisors (102467335).

235071993 is a wasteful number, since it uses less digits than its factorization.

235071993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6027503.

The product of its (nonzero) digits is 51030, while the sum is 39.

The square root of 235071993 is about 15332.0576896906. The cubic root of 235071993 is about 617.1635897543.

The spelling of 235071993 in words is "two hundred thirty-five million, seventy-one thousand, nine hundred ninety-three".

Divisors: 1 3 13 39 6027487 18082461 78357331 235071993