24985220 has 24 divisors (see below), whose sum is σ = 56505624. Its totient is φ = 9225216.

The previous prime is 24985217. The next prime is 24985229. The reversal of 24985220 is 2258942.

It can be written as a sum of positive squares in 4 ways, for example, as 857476 + 24127744 = 926^2 + 4912^2 .

It is a super-2 number, since 2×24985220² = 1248522436896800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (24985229) 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, 47789 + ... + 48308.

It is an arithmetic number, because the mean of its divisors is an integer number (2354401).

Almost surely, 2^24985220 is an apocalyptic number.

24985220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

24985220 is an abundant number, since it is smaller than the sum of its proper divisors (31520404).

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

24985220 is a wasteful number, since it uses less digits than its factorization.

24985220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96119 (or 96117 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 24985220 is about 4998.5217814870. The cubic root of 24985220 is about 292.3441398192.

The spelling of 24985220 in words is "twenty-four million, nine hundred eighty-five thousand, two hundred twenty".