23198240 has 96 divisors (see below), whose sum is σ = 62233920. Its totient is φ = 8100864.

The previous prime is 23198233. The next prime is 23198243. The reversal of 23198240 is 4289132.

23198240 = T₃₀₄ + T₃₀₅ + ... + T₅₅₀.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23198243) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39227 + ... + 39813.

It is an arithmetic number, because the mean of its divisors is an integer number (648270).

Almost surely, 2^23198240 is an apocalyptic number.

23198240 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 23198240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31116960).

23198240 is an abundant number, since it is smaller than the sum of its proper divisors (39035680).

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

23198240 is a wasteful number, since it uses less digits than its factorization.

23198240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 634 (or 626 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 23198240 is about 4816.4551279961. The cubic root of 23198240 is about 285.2014170739.

The spelling of 23198240 in words is "twenty-three million, one hundred ninety-eight thousand, two hundred forty".