24997140 has 192 divisors, whose sum is σ = 94348800. Its totient is φ = 5363712.

The previous prime is 24997139. The next prime is 24997151. The reversal of 24997140 is 4179942.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 24997095 and 24997104.

It is a Saint-Exupery number, since it is equal to the product of the sides of a Pythagorean triangle: 389 × 189 × 340.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 64066 + ... + 64454.

It is an arithmetic number, because the mean of its divisors is an integer number (491400).

Almost surely, 2^24997140 is an apocalyptic number.

24997140 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 24997140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47174400).

24997140 is an abundant number, since it is smaller than the sum of its proper divisors (69351660).

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

24997140 is a wasteful number, since it uses less digits than its factorization.

24997140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431 (or 423 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 24997140 is about 4999.7139918199. The cubic root of 24997140 is about 292.3906231418.

The spelling of 24997140 in words is "twenty-four million, nine hundred ninety-seven thousand, one hundred forty".