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23980401 = 33888163
BaseRepresentation
bin101101101111…
…0100101110001
31200010022221000
41123132211301
522114333101
62213552213
7410554464
oct133364561
950108830
1023980401
1112599915
128045669
134c780b3
1432832db
15218a486
hex16de971

23980401 has 8 divisors (see below), whose sum is σ = 35526560. Its totient is φ = 15986916.

The previous prime is 23980399. The next prime is 23980417. The reversal of 23980401 is 10408932.

It is not a de Polignac number, because 23980401 - 21 = 23980399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 888163 = 23980401 / (2 + 3 + 9 + 8 + 0 + 4 + 0 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23980001) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 444055 + ... + 444108.

It is an arithmetic number, because the mean of its divisors is an integer number (4440820).

Almost surely, 223980401 is an apocalyptic number.

It is an amenable number.

23980401 is a deficient number, since it is larger than the sum of its proper divisors (11546159).

23980401 is an equidigital number, since it uses as much as digits as its factorization.

23980401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 888172 (or 888166 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 23980401 is about 4896.9787624616. The cubic root of 23980401 is about 288.3713742080.

The spelling of 23980401 in words is "twenty-three million, nine hundred eighty thousand, four hundred one".

Divisors: 1 3 9 27 888163 2664489 7993467 23980401