23949240 has 96 divisors (see below), whose sum is σ = 83598480. Its totient is φ = 5472768.

The previous prime is 23949229. The next prime is 23949241. The reversal of 23949240 is 4294932.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23949241) 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, 3844 + ... + 7916.

Almost surely, 2^23949240 is an apocalyptic number.

23949240 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 23949240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41799240).

23949240 is an abundant number, since it is smaller than the sum of its proper divisors (59649240).

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

23949240 is a wasteful number, since it uses less digits than its factorization.

23949240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4101 (or 4090 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 33.

The square root of 23949240 is about 4893.7960725801. The cubic root of 23949240 is about 288.2464133366.

The spelling of 23949240 in words is "twenty-three million, nine hundred forty-nine thousand, two hundred forty".