24138493 has 16 divisors (see below), whose sum is σ = 26337600. Its totient is φ = 22049280.

The previous prime is 24138481. The next prime is 24138497. The reversal of 24138493 is 39483142.

It is a cyclic number.

It is not a de Polignac number, because 24138493 - 2⁵ = 24138461 is a prime.

It is a super-2 number, since 2×24138493² = 1165333688622098, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24138497) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 68205 + ... + 68557.

It is an arithmetic number, because the mean of its divisors is an integer number (1646100).

Almost surely, 2^24138493 is an apocalyptic number.

It is an amenable number.

24138493 is a deficient number, since it is larger than the sum of its proper divisors (2199107).

24138493 is a wasteful number, since it uses less digits than its factorization.

24138493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 492.

The product of its digits is 20736, while the sum is 34.

The square root of 24138493 is about 4913.0940353305. The cubic root of 24138493 is about 289.0036876483.

The spelling of 24138493 in words is "twenty-four million, one hundred thirty-eight thousand, four hundred ninety-three".