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23980477 = 293722349
BaseRepresentation
bin101101101111…
…0100110111101
31200010100000211
41123132212331
522114333402
62213552421
7410554633
oct133364675
950110024
1023980477
1112599984
128045711
134c78141
143283353
15218a4d7
hex16de9bd

23980477 has 8 divisors (see below), whose sum is σ = 25479000. Its totient is φ = 22526784.

The previous prime is 23980469. The next prime is 23980487. The reversal of 23980477 is 77408932.

It can be written as a sum of positive squares in 4 ways, for example, as 4435236 + 19545241 = 2106^2 + 4421^2 .

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

It is not a de Polignac number, because 23980477 - 23 = 23980469 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23980417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10102 + ... + 12247.

It is an arithmetic number, because the mean of its divisors is an integer number (3184875).

Almost surely, 223980477 is an apocalyptic number.

It is an amenable number.

23980477 is a deficient number, since it is larger than the sum of its proper divisors (1498523).

23980477 is a wasteful number, since it uses less digits than its factorization.

23980477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22415.

The product of its (nonzero) digits is 84672, while the sum is 40.

The square root of 23980477 is about 4896.9865223421. The cubic root of 23980477 is about 288.3716788485.

The spelling of 23980477 in words is "twenty-three million, nine hundred eighty thousand, four hundred seventy-seven".

Divisors: 1 29 37 1073 22349 648121 826913 23980477