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68453618 = 2191801411
BaseRepresentation
bin1000001010010…
…00010011110010
311202210210201012
410011020103302
5120011003433
610443110522
71460563142
oct405102362
9152723635
1068453618
1135705242
121ab12442
13112499cc
14913c922
156022848
hex41484f2

68453618 has 8 divisors (see below), whose sum is σ = 108084720. Its totient is φ = 32425380.

The previous prime is 68453617. The next prime is 68453621. The reversal of 68453618 is 81635486.

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

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (68453617) 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, 900668 + ... + 900743.

It is an arithmetic number, because the mean of its divisors is an integer number (13510590).

Almost surely, 268453618 is an apocalyptic number.

68453618 is a deficient number, since it is larger than the sum of its proper divisors (39631102).

68453618 is a wasteful number, since it uses less digits than its factorization.

68453618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1801432.

The product of its digits is 138240, while the sum is 41.

The square root of 68453618 is about 8273.6701650477. The cubic root of 68453618 is about 409.0711035051.

The spelling of 68453618 in words is "sixty-eight million, four hundred fifty-three thousand, six hundred eighteen".

Divisors: 1 2 19 38 1801411 3602822 34226809 68453618