20469760 has 48 divisors (see below), whose sum is σ = 49140000. Its totient is φ = 8183808.

The previous prime is 20469739. The next prime is 20469791. The reversal of 20469760 is 6796402.

It is a super-2 number, since 2×20469760² = 838022148915200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9241 + ... + 11239.

It is an arithmetic number, because the mean of its divisors is an integer number (1023750).

Almost surely, 2^20469760 is an apocalyptic number.

20469760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20469760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24570000).

20469760 is an abundant number, since it is smaller than the sum of its proper divisors (28670240).

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

20469760 is an equidigital number, since it uses as much as digits as its factorization.

20469760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2026 (or 2006 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 20469760 is about 4524.3518872873. The cubic root of 20469760 is about 273.5505445077.

The spelling of 20469760 in words is "twenty million, four hundred sixty-nine thousand, seven hundred sixty".