Search a number
43664688 = 2432353859
BaseRepresentation
bin1010011010010…
…0010100110000
310001011101200200
42212210110300
542134232223
64155515200
71040100204
oct246442460
9101141620
1043664688
1122713a21
1212758b00
13907a8c2
145b28b04
153c77a43
hex29a4530

43664688 has 60 divisors (see below), whose sum is σ = 122689320. Its totient is φ = 14496768.

The previous prime is 43664671. The next prime is 43664689. The reversal of 43664688 is 88646634.

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (43664689) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 50403 + ... + 51261.

It is an arithmetic number, because the mean of its divisors is an integer number (2044822).

Almost surely, 243664688 is an apocalyptic number.

43664688 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43664688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (61344660).

43664688 is an abundant number, since it is smaller than the sum of its proper divisors (79024632).

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

43664688 is a wasteful number, since it uses less digits than its factorization.

43664688 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1226 (or 1217 counting only the distinct ones).

The product of its digits is 663552, while the sum is 45.

The square root of 43664688 is about 6607.9261497084. The cubic root of 43664688 is about 352.1357517029.

The spelling of 43664688 in words is "forty-three million, six hundred sixty-four thousand, six hundred eighty-eight".