Search a number
-
+
38480 = 2451337
BaseRepresentation
bin1001011001010000
31221210012
421121100
52212410
6454052
7220121
oct113120
957705
1038480
1126a02
121a328
1314690
1410048
15b605
hex9650

38480 has 40 divisors (see below), whose sum is σ = 98952. Its totient is φ = 13824.

The previous prime is 38461. The next prime is 38501. The reversal of 38480 is 8483.

38480 = T64 + T65 + ... + T78.

It can be written as a sum of positive squares in 4 ways, for example, as 4624 + 33856 = 68^2 + 184^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a nialpdrome in base 16.

It is a congruent number.

It is an unprimeable number.

38480 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1022 + ... + 1058.

238480 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49476).

38480 is an abundant number, since it is smaller than the sum of its proper divisors (60472).

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

38480 is a wasteful number, since it uses less digits than its factorization.

38480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 38480 is about 196.1631973638. The cubic root of 38480 is about 33.7607190461.

Adding to 38480 its sum of digits (23), we get a triangular number (38503 = T277).

It can be divided in two parts, 384 and 80, that added together give a palindrome (464).

The spelling of 38480 in words is "thirty-eight thousand, four hundred eighty".

Divisors: 1 2 4 5 8 10 13 16 20 26 37 40 52 65 74 80 104 130 148 185 208 260 296 370 481 520 592 740 962 1040 1480 1924 2405 2960 3848 4810 7696 9620 19240 38480