Search a number
-
+
38405001 = 3313711161
BaseRepresentation
bin1001001010000…
…0001110001001
32200021011202110
42102200032021
534312430001
63451052533
7644302635
oct222401611
980234673
1038405001
111a751278
1210a41149
137c5886b
145159dc5
1535893d6
hex24a0389

38405001 has 16 divisors (see below), whose sum is σ = 54291968. Its totient is φ = 24105600.

The previous prime is 38404997. The next prime is 38405011. The reversal of 38405001 is 10050483.

It is not a de Polignac number, because 38405001 - 22 = 38404997 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (38405011) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2140 + ... + 9021.

It is an arithmetic number, because the mean of its divisors is an integer number (3393248).

Almost surely, 238405001 is an apocalyptic number.

38405001 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

38405001 is a deficient number, since it is larger than the sum of its proper divisors (15886967).

38405001 is a wasteful number, since it uses less digits than its factorization.

38405001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11232.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 38405001 is about 6197.1768572472. The cubic root of 38405001 is about 337.3877113418.

Adding to 38405001 its reverse (10050483), we get a palindrome (48455484).

The spelling of 38405001 in words is "thirty-eight million, four hundred five thousand, one".

Divisors: 1 3 31 37 93 111 1147 3441 11161 33483 345991 412957 1037973 1238871 12801667 38405001