24981000 has 128 divisors (see below), whose sum is σ = 85138560. Its totient is φ = 6048000.

The previous prime is 24980999. The next prime is 24981001. The reversal of 24981000 is 18942.

It is an interprime number because it is at equal distance from previous prime (24980999) and next prime (24981001).

It is a super-2 number, since 2×24981000² = 1248100722000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is not an unprimeable number, because it can be changed into a prime (24981001) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 32622 + ... + 33378.

It is an arithmetic number, because the mean of its divisors is an integer number (665145).

Almost surely, 2^24981000 is an apocalyptic number.

24981000 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 24981000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42569280).

24981000 is an abundant number, since it is smaller than the sum of its proper divisors (60157560).

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

24981000 is a wasteful number, since it uses less digits than its factorization.

24981000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 792 (or 778 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 24981000 is about 4998.0996388628. The cubic root of 24981000 is about 292.3276799316.

Adding to 24981000 its reverse (18942), we get a palindrome (24999942).

The spelling of 24981000 in words is "twenty-four million, nine hundred eighty-one thousand".