24128013 has 32 divisors (see below), whose sum is σ = 40886272. Its totient is φ = 12312000.

The previous prime is 24128009. The next prime is 24128021. The reversal of 24128013 is 31082142.

It is not a de Polignac number, because 24128013 - 2² = 24128009 is a prime.

It is a super-2 number, since 2×24128013² = 1164322022656338, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24128003) 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, 7038 + ... + 9888.

It is an arithmetic number, because the mean of its divisors is an integer number (1277696).

Almost surely, 2^24128013 is an apocalyptic number.

It is an amenable number.

24128013 is a deficient number, since it is larger than the sum of its proper divisors (16758259).

24128013 is a wasteful number, since it uses less digits than its factorization.

24128013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2905.

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 24128013 is about 4912.0273818455. The cubic root of 24128013 is about 288.9618568530.

The spelling of 24128013 in words is "twenty-four million, one hundred twenty-eight thousand, thirteen".