Search a number
-
+
68694460 = 2257347051
BaseRepresentation
bin1000001100000…
…11000110111100
311210021001002021
410012003012330
5120041210320
610452205524
71462615252
oct406030674
9153231067
1068694460
113585a18a
121b0098a4
1311302513
1491a25d2
15606ddaa
hex41831bc

68694460 has 24 divisors (see below), whose sum is σ = 146237616. Its totient is φ = 27100800.

The previous prime is 68694421. The next prime is 68694463. The reversal of 68694460 is 6449686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68694463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22066 + ... + 24985.

It is an arithmetic number, because the mean of its divisors is an integer number (6093234).

Almost surely, 268694460 is an apocalyptic number.

It is an amenable number.

68694460 is an abundant number, since it is smaller than the sum of its proper divisors (77543156).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68694460 is a wasteful number, since it uses less digits than its factorization.

68694460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47133 (or 47131 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 68694460 is about 8288.2121111854. The cubic root of 68694460 is about 409.5502901786.

The spelling of 68694460 in words is "sixty-eight million, six hundred ninety-four thousand, four hundred sixty".

Divisors: 1 2 4 5 10 20 73 146 292 365 730 1460 47051 94102 188204 235255 470510 941020 3434723 6869446 13738892 17173615 34347230 68694460