24136981 has 8 divisors (see below), whose sum is σ = 26649504. Its totient is φ = 21677520.

The previous prime is 24136979. The next prime is 24136999. The reversal of 24136981 is 18963142.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 24136981 - 2¹ = 24136979 is a prime.

It is a super-2 number, since 2×24136981² = 1165187703588722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24136901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12306 + ... + 14131.

It is an arithmetic number, because the mean of its divisors is an integer number (3331188).

Almost surely, 2^24136981 is an apocalyptic number.

It is an amenable number.

24136981 is a deficient number, since it is larger than the sum of its proper divisors (2512523).

24136981 is a wasteful number, since it uses less digits than its factorization.

24136981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26531.

The product of its digits is 10368, while the sum is 34.

The square root of 24136981 is about 4912.9401583980. The cubic root of 24136981 is about 288.9976532657.

The spelling of 24136981 in words is "twenty-four million, one hundred thirty-six thousand, nine hundred eighty-one".