23420670 has 128 divisors (see below), whose sum is σ = 72382464. Its totient is φ = 4713984.

The previous prime is 23420669. The next prime is 23420671. The reversal of 23420670 is 7602432.

It is an interprime number because it is at equal distance from previous prime (23420669) and next prime (23420671).

It is a self number, because there is not a number n which added to its sum of digits gives 23420670.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23420671) 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 63 ways as a sum of consecutive naturals, for example, 62604 + ... + 62976.

It is an arithmetic number, because the mean of its divisors is an integer number (565488).

Almost surely, 2^23420670 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23420670, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36191232).

23420670 is an abundant number, since it is smaller than the sum of its proper divisors (48961794).

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

23420670 is a wasteful number, since it uses less digits than its factorization.

23420670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 23420670 is about 4839.4906756807. The cubic root of 23420670 is about 286.1100445354.

It can be divided in two parts, 23420 and 670, that added together give a triangular number (24090 = T₂₁₉).

The spelling of 23420670 in words is "twenty-three million, four hundred twenty thousand, six hundred seventy".