24780897 has 20 divisors (see below), whose sum is σ = 37200240. Its totient is φ = 16507476.

The previous prime is 24780871. The next prime is 24780907. The reversal of 24780897 is 79808742.

It is not a de Polignac number, because 24780897 - 2¹⁰ = 24779873 is a prime.

It is a super-2 number, since 2×24780897² = 1228185712249218, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (24785897) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19054 + ... + 20312.

It is an arithmetic number, because the mean of its divisors is an integer number (1860012).

Almost surely, 2^24780897 is an apocalyptic number.

24780897 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

24780897 is a deficient number, since it is larger than the sum of its proper divisors (12419343).

24780897 is an frugal number, since it uses more digits than its factorization.

24780897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1286 (or 1262 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 24780897 is about 4978.0414823503. The cubic root of 24780897 is about 291.5450513746.

The spelling of 24780897 in words is "twenty-four million, seven hundred eighty thousand, eight hundred ninety-seven".