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23478385 = 57670811
BaseRepresentation
bin101100110010…
…0000001110001
31122011211021211
41121210001301
522002302020
62155120121
7403364050
oct131440161
948154254
1023478385
1112286727
127a43041
134b30748
143192397
1520db85a
hex1664071

23478385 has 8 divisors (see below), whose sum is σ = 32198976. Its totient is φ = 16099440.

The previous prime is 23478379. The next prime is 23478397. The reversal of 23478385 is 58387432.

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

It is not a de Polignac number, because 23478385 - 29 = 23477873 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335371 + ... + 335440.

It is an arithmetic number, because the mean of its divisors is an integer number (4024872).

Almost surely, 223478385 is an apocalyptic number.

It is an amenable number.

23478385 is a deficient number, since it is larger than the sum of its proper divisors (8720591).

23478385 is an equidigital number, since it uses as much as digits as its factorization.

23478385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670823.

The product of its digits is 161280, while the sum is 40.

The square root of 23478385 is about 4845.4499275093. The cubic root of 23478385 is about 286.3448698086.

The spelling of 23478385 in words is "twenty-three million, four hundred seventy-eight thousand, three hundred eighty-five".

Divisors: 1 5 7 35 670811 3354055 4695677 23478385