23240000 has 140 divisors (see below), whose sum is σ = 66653664. Its totient is φ = 7872000.

The previous prime is 23239981. The next prime is 23240011. The reversal of 23240000 is 4232.

23240000 = T₇₁ + T₇₂ + ... + T₅₁₈.

It is a tau number, because it is divible by the number of its divisors (140).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 279959 + ... + 280041.

Almost surely, 2^23240000 is an apocalyptic number.

23240000 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 23240000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33326832).

23240000 is an abundant number, since it is smaller than the sum of its proper divisors (43413664).

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

23240000 is an frugal number, since it uses more digits than its factorization.

23240000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122 (or 97 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 11.

The square root of 23240000 is about 4820.7883172776. The cubic root of 23240000 is about 285.3724483212.

Adding to 23240000 its reverse (4232), we get a palindrome (23244232).

The spelling of 23240000 in words is "twenty-three million, two hundred forty thousand".