Search a number
-
+
10140481 = 13780037
BaseRepresentation
bin100110101011…
…101101000001
3201002012010101
4212223231001
510043443411
61001202401
7152123041
oct46535501
921065111
1010140481
1157a676a
123490401
1321407b0
1414bd721
15d548c1
hex9abb41

10140481 has 4 divisors (see below), whose sum is σ = 10920532. Its totient is φ = 9360432.

The previous prime is 10140469. The next prime is 10140499. The reversal of 10140481 is 18404101.

10140481 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 18404101 = 97189733.

It can be written as a sum of positive squares in 2 ways, for example, as 6076225 + 4064256 = 2465^2 + 2016^2 .

It is a cyclic number.

It is not a de Polignac number, because 10140481 - 27 = 10140353 is a prime.

It is a super-2 number, since 2×101404812 = 205658709822722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10140421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 390006 + ... + 390031.

It is an arithmetic number, because the mean of its divisors is an integer number (2730133).

Almost surely, 210140481 is an apocalyptic number.

It is an amenable number.

10140481 is a deficient number, since it is larger than the sum of its proper divisors (780051).

10140481 is an equidigital number, since it uses as much as digits as its factorization.

10140481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780050.

The product of its (nonzero) digits is 128, while the sum is 19.

The square root of 10140481 is about 3184.4121906562. The cubic root of 10140481 is about 216.4476384882.

Adding to 10140481 its reverse (18404101), we get a palindrome (28544582).

It can be divided in two parts, 1014048 and 1, that added together give a square (1014049 = 10072).

The spelling of 10140481 in words is "ten million, one hundred forty thousand, four hundred eighty-one".

Divisors: 1 13 780037 10140481