23298340 has 72 divisors (see below), whose sum is σ = 54324648. Its totient is φ = 8386560.

The previous prime is 23298311. The next prime is 23298343. The reversal of 23298340 is 4389232.

It can be written as a sum of positive squares in 12 ways, for example, as 23116864 + 181476 = 4808^2 + 426^2 .

It is not an unprimeable number, because it can be changed into a prime (23298343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 206124 + ... + 206236.

It is an arithmetic number, because the mean of its divisors is an integer number (754509).

Almost surely, 2^23298340 is an apocalyptic number.

23298340 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 23298340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27162324).

23298340 is an abundant number, since it is smaller than the sum of its proper divisors (31026308).

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

23298340 is a wasteful number, since it uses less digits than its factorization.

23298340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 209 (or 194 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 23298340 is about 4826.8354022071. The cubic root of 23298340 is about 285.6110415062.

The spelling of 23298340 in words is "twenty-three million, two hundred ninety-eight thousand, three hundred forty".