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23478 = 2371343
BaseRepresentation
bin101101110110110
31012012120
411232312
51222403
6300410
7125310
oct55666
935176
1023478
1116704
1211706
13a8c0
1487b0
156e53
hex5bb6

23478 has 32 divisors (see below), whose sum is σ = 59136. Its totient is φ = 6048.

The previous prime is 23473. The next prime is 23497. The reversal of 23478 is 87432.

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

It is a Curzon number.

It is a plaindrome in base 8 and base 10.

It is a zygodrome in base 8.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23473) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 525 + ... + 567.

It is an arithmetic number, because the mean of its divisors is an integer number (1848).

223478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29568).

23478 is an abundant number, since it is smaller than the sum of its proper divisors (35658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23478 is a wasteful number, since it uses less digits than its factorization.

23478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68.

The product of its digits is 1344, while the sum is 24.

The square root of 23478 is about 153.2253242777. The cubic root of 23478 is about 28.6343304633.

The spelling of 23478 in words is "twenty-three thousand, four hundred seventy-eight".