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23474893 = 131805761
BaseRepresentation
bin101100110001…
…1001011001101
31122011122111111
41121203023031
522002144033
62155052021
7403350631
oct131431315
948148444
1023474893
1112284042
127a41011
134b2bc90
143190dc1
1520da7cd
hex16632cd

23474893 has 4 divisors (see below), whose sum is σ = 25280668. Its totient is φ = 21669120.

The previous prime is 23474887. The next prime is 23474903. The reversal of 23474893 is 39847432.

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

It can be written as a sum of positive squares in 2 ways, for example, as 4088484 + 19386409 = 2022^2 + 4403^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-23474893 is a prime.

It is a super-2 number, since 2×234748932 = 1102141202722898, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23474863) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 902868 + ... + 902893.

It is an arithmetic number, because the mean of its divisors is an integer number (6320167).

Almost surely, 223474893 is an apocalyptic number.

It is an amenable number.

23474893 is a deficient number, since it is larger than the sum of its proper divisors (1805775).

23474893 is a wasteful number, since it uses less digits than its factorization.

23474893 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805774.

The product of its digits is 145152, while the sum is 40.

The square root of 23474893 is about 4845.0895760553. The cubic root of 23474893 is about 286.3306728375.

The spelling of 23474893 in words is "twenty-three million, four hundred seventy-four thousand, eight hundred ninety-three".

Divisors: 1 13 1805761 23474893