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23070 = 235769
BaseRepresentation
bin101101000011110
31011122110
411220132
51214240
6254450
7124155
oct55036
934573
1023070
1116373
1211426
13a668
14859c
156c80
hex5a1e

23070 has 16 divisors (see below), whose sum is σ = 55440. Its totient is φ = 6144.

The previous prime is 23063. The next prime is 23071. The reversal of 23070 is 7032.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23071) 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, 355 + ... + 414.

It is an arithmetic number, because the mean of its divisors is an integer number (3465).

223070 is an apocalyptic number.

23070 is an abundant number, since it is smaller than the sum of its proper divisors (32370).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27720).

23070 is a wasteful number, since it uses less digits than its factorization.

23070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 779.

The product of its (nonzero) digits is 42, while the sum is 12.

The square root of 23070 is about 151.8881167175. Note that the first 3 decimals coincide. The cubic root of 23070 is about 28.4674914034.

It can be divided in two parts, 230 and 70, that added together give a triangular number (300 = T24).

The spelling of 23070 in words is "twenty-three thousand, seventy", and thus it is an iban number.

Divisors: 1 2 3 5 6 10 15 30 769 1538 2307 3845 4614 7690 11535 23070