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24688081 = 112244371
BaseRepresentation
bin101111000101…
…1010111010001
31201110021200101
41132023113101
522310004311
62241052401
7416562625
oct136132721
951407611
1024688081
1112a32580
128327101
135165242
1433c9185
152279ec1
hex178b5d1

24688081 has 4 divisors (see below), whose sum is σ = 26932464. Its totient is φ = 22443700.

The previous prime is 24688067. The next prime is 24688091. The reversal of 24688081 is 18088642.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-24688081 is a prime.

It is a super-2 number, since 2×246880812 = 1219002686925122, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 24688081.

It is not an unprimeable number, because it can be changed into a prime (24688031) 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, 1122175 + ... + 1122196.

It is an arithmetic number, because the mean of its divisors is an integer number (6733116).

Almost surely, 224688081 is an apocalyptic number.

It is an amenable number.

24688081 is a deficient number, since it is larger than the sum of its proper divisors (2244383).

24688081 is a wasteful number, since it uses less digits than its factorization.

24688081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2244382.

The product of its (nonzero) digits is 24576, while the sum is 37.

The square root of 24688081 is about 4968.7101948091. The cubic root of 24688081 is about 291.1806053241.

The spelling of 24688081 in words is "twenty-four million, six hundred eighty-eight thousand, eighty-one".

Divisors: 1 11 2244371 24688081