24230640 has 80 divisors (see below), whose sum is σ = 85851648. Its totient is φ = 5538048.

The previous prime is 24230639. The next prime is 24230659. The reversal of 24230640 is 4603242.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5532 + ... + 8891.

Almost surely, 2^24230640 is an apocalyptic number.

24230640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

24230640 is an abundant number, since it is smaller than the sum of its proper divisors (61621008).

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

24230640 is a wasteful number, since it uses less digits than its factorization.

24230640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14446 (or 14440 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 24230640 is about 4922.4627982342. The cubic root of 24230640 is about 289.3709711042.

Adding to 24230640 its reverse (4603242), we get a palindrome (28833882).

The spelling of 24230640 in words is "twenty-four million, two hundred thirty thousand, six hundred forty".