Search a number
-
+
68854440 = 2335573787
BaseRepresentation
bin1000001101010…
…10001010101000
311210120011112110
410012222022220
5120111320230
610455442320
71464152544
oct406521250
9153504473
1068854440
11359593a6
121b0863a0
131135a295
149204a24
1560a14b0
hex41aa2a8

68854440 has 32 divisors (see below), whose sum is σ = 206563680. Its totient is φ = 18361152.

The previous prime is 68854417. The next prime is 68854453. The reversal of 68854440 is 4445886.

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, 286774 + ... + 287013.

It is an arithmetic number, because the mean of its divisors is an integer number (6455115).

Almost surely, 268854440 is an apocalyptic number.

68854440 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

68854440 is an abundant number, since it is smaller than the sum of its proper divisors (137709240).

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

68854440 is a wasteful number, since it uses less digits than its factorization.

68854440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 573801 (or 573797 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 39.

The square root of 68854440 is about 8297.8575548150. The cubic root of 68854440 is about 409.8679725597.

It can be divided in two parts, 6885 and 4440, that added together give a triangular number (11325 = T150).

The spelling of 68854440 in words is "sixty-eight million, eight hundred fifty-four thousand, four hundred forty".

Divisors: 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 120 573787 1147574 1721361 2295148 2868935 3442722 4590296 5737870 6885444 8606805 11475740 13770888 17213610 22951480 34427220 68854440