24981990 has 32 divisors (see below), whose sum is σ = 65408256. Its totient is φ = 6056160.

The previous prime is 24981973. The next prime is 24981991. The reversal of 24981990 is 9918942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24981991) 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, 37522 + ... + 38181.

It is an arithmetic number, because the mean of its divisors is an integer number (2044008).

Almost surely, 2^24981990 is an apocalyptic number.

24981990 is an abundant number, since it is smaller than the sum of its proper divisors (40426266).

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

24981990 is a wasteful number, since it uses less digits than its factorization.

24981990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75724.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 24981990 is about 4998.1986755230. The cubic root of 24981990 is about 292.3315415409.

The spelling of 24981990 in words is "twenty-four million, nine hundred eighty-one thousand, nine hundred ninety".