Search a number
-
+
38900071 = 723125609
BaseRepresentation
bin1001010001100…
…1000101100111
32201012022212101
42110121011213
534424300241
63505432531
7651434200
oct224310547
981168771
1038900071
111aa5a221
121103b747
13809ccc2
1452485a7
153635e31
hex2519167

38900071 has 12 divisors (see below), whose sum is σ = 46712640. Its totient is φ = 32266080.

The previous prime is 38900053. The next prime is 38900077. The reversal of 38900071 is 17000983.

It is not a de Polignac number, because 38900071 - 217 = 38768999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38900077) 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, 11286 + ... + 14323.

It is an arithmetic number, because the mean of its divisors is an integer number (3892720).

Almost surely, 238900071 is an apocalyptic number.

38900071 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

38900071 is a deficient number, since it is larger than the sum of its proper divisors (7812569).

38900071 is a wasteful number, since it uses less digits than its factorization.

38900071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25654 (or 25647 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 38900071 is about 6236.9921436539. The cubic root of 38900071 is about 338.8312552273.

The spelling of 38900071 in words is "thirty-eight million, nine hundred thousand, seventy-one".

Divisors: 1 7 31 49 217 1519 25609 179263 793879 1254841 5557153 38900071