23443400 has 48 divisors (see below), whose sum is σ = 54840240. Its totient is φ = 9320000.

The previous prime is 23443373. The next prime is 23443411. The reversal of 23443400 is 434432.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49967 + ... + 50433.

It is an arithmetic number, because the mean of its divisors is an integer number (1142505).

Almost surely, 2^23443400 is an apocalyptic number.

23443400 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 23443400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27420120).

23443400 is an abundant number, since it is smaller than the sum of its proper divisors (31396840).

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

23443400 is a wasteful number, since it uses less digits than its factorization.

23443400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 734 (or 725 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 23443400 is about 4841.8384937955. The cubic root of 23443400 is about 286.2025721846.

Adding to 23443400 its reverse (434432), we get a palindrome (23877832).

It can be divided in two parts, 234 and 43400, that added together give a palindrome (43634).

The spelling of 23443400 in words is "twenty-three million, four hundred forty-three thousand, four hundred".