23070420 has 144 divisors (see below), whose sum is σ = 74850048. Its totient is φ = 5961600.

The previous prime is 23070407. The next prime is 23070433. The reversal of 23070420 is 2407032.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (23070407) and next prime (23070433).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 23070393 and 23070402.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 228370 + ... + 228470.

It is an arithmetic number, because the mean of its divisors is an integer number (519792).

Almost surely, 2^23070420 is an apocalyptic number.

23070420 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 23070420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37425024).

23070420 is an abundant number, since it is smaller than the sum of its proper divisors (51779628).

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

23070420 is a wasteful number, since it uses less digits than its factorization.

23070420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 18.

The square root of 23070420 is about 4803.1677047549. The cubic root of 23070420 is about 284.6766415694.

Adding to 23070420 its reverse (2407032), we get a palindrome (25477452).

The spelling of 23070420 in words is "twenty-three million, seventy thousand, four hundred twenty".