Search a number
-
+
10249381 = 79137947
BaseRepresentation
bin100111000110…
…010010100101
3201021201111201
4213012102211
510110440011
61003402501
7153055402
oct47062245
921251451
1010249381
11587056a
123523431
13217b22c
14150b2a9
15d76cc1
hex9c64a5

10249381 has 8 divisors (see below), whose sum is σ = 10465920. Its totient is φ = 10035168.

The previous prime is 10249367. The next prime is 10249387. The reversal of 10249381 is 18394201.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 10249381 - 211 = 10247333 is a prime.

It is a super-2 number, since 2×102493812 = 210099621766322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10249387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10350 + ... + 11296.

It is an arithmetic number, because the mean of its divisors is an integer number (1308240).

Almost surely, 210249381 is an apocalyptic number.

It is an amenable number.

10249381 is a deficient number, since it is larger than the sum of its proper divisors (216539).

10249381 is an equidigital number, since it uses as much as digits as its factorization.

10249381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1163.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 10249381 is about 3201.4654456983. The cubic root of 10249381 is about 217.2197014621.

The spelling of 10249381 in words is "ten million, two hundred forty-nine thousand, three hundred eighty-one".

Divisors: 1 79 137 947 10823 74813 129739 10249381