23870220 has 96 divisors (see below), whose sum is σ = 74269440. Its totient is φ = 5679360.

The previous prime is 23870191. The next prime is 23870221. The reversal of 23870220 is 2207832.

It is not an unprimeable number, because it can be changed into a prime (23870221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 38634 + ... + 39246.

It is an arithmetic number, because the mean of its divisors is an integer number (773640).

Almost surely, 2^23870220 is an apocalyptic number.

23870220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23870220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37134720).

23870220 is an abundant number, since it is smaller than the sum of its proper divisors (50399220).

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

23870220 is a wasteful number, since it uses less digits than its factorization.

23870220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 695 (or 693 counting only the distinct ones).

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

The square root of 23870220 is about 4885.7159147867. The cubic root of 23870220 is about 287.9290430902.

It can be divided in two parts, 23870 and 220, that added together give a triangular number (24090 = T₂₁₉).

The spelling of 23870220 in words is "twenty-three million, eight hundred seventy thousand, two hundred twenty".