24978641 has 2 divisors, whose sum is σ = 24978642. Its totient is φ = 24978640.

The previous prime is 24978637. The next prime is 24978647. The reversal of 24978641 is 14687942.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23814400 + 1164241 = 4880^2 + 1079^2 .

It is a cyclic number.

It is not a de Polignac number, because 24978641 - 2² = 24978637 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (24978647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12489320 + 12489321.

It is an arithmetic number, because the mean of its divisors is an integer number (12489321).

Almost surely, 2^24978641 is an apocalyptic number.

It is an amenable number.

24978641 is a deficient number, since it is larger than the sum of its proper divisors (1).

24978641 is an equidigital number, since it uses as much as digits as its factorization.

24978641 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 41.

The square root of 24978641 is about 4997.8636435981. The cubic root of 24978641 is about 292.3184779687.

The spelling of 24978641 in words is "twenty-four million, nine hundred seventy-eight thousand, six hundred forty-one".