24390138 has 16 divisors (see below), whose sum is σ = 51649920. Its totient is φ = 7651776.

The previous prime is 24390109. The next prime is 24390139. The reversal of 24390138 is 83109342.

It is not an unprimeable number, because it can be changed into a prime (24390139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 119458 + ... + 119661.

It is an arithmetic number, because the mean of its divisors is an integer number (3228120).

Almost surely, 2^24390138 is an apocalyptic number.

24390138 is an abundant number, since it is smaller than the sum of its proper divisors (27259782).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

24390138 is a wasteful number, since it uses less digits than its factorization.

24390138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239141.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 24390138 is about 4938.6372614315. The cubic root of 24390138 is about 290.0045104332.

The spelling of 24390138 in words is "twenty-four million, three hundred ninety thousand, one hundred thirty-eight".