Search a number
-
+
107438251 = 132181331
BaseRepresentation
bin1100110011101…
…10000010101011
321111011102120111
412121312002223
5210001011001
614354435151
72443132024
oct631660253
9244142514
10107438251
1155711a48
122bb92ab7
131934933b
14103a9c4b
159673851
hex66760ab

107438251 has 4 divisors (see below), whose sum is σ = 107520904. Its totient is φ = 107355600.

The previous prime is 107438239. The next prime is 107438257. The reversal of 107438251 is 152834701.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-107438251 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (107438257) 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, 39345 + ... + 41986.

It is an arithmetic number, because the mean of its divisors is an integer number (26880226).

Almost surely, 2107438251 is an apocalyptic number.

107438251 is a deficient number, since it is larger than the sum of its proper divisors (82653).

107438251 is an equidigital number, since it uses as much as digits as its factorization.

107438251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82652.

The product of its (nonzero) digits is 6720, while the sum is 31.

The square root of 107438251 is about 10365.2424477192. The cubic root of 107438251 is about 475.3932123530.

The spelling of 107438251 in words is "one hundred seven million, four hundred thirty-eight thousand, two hundred fifty-one".

Divisors: 1 1321 81331 107438251