20479320 has 96 divisors (see below), whose sum is σ = 67158000. Its totient is φ = 5412096.

The previous prime is 20479297. The next prime is 20479331. The reversal of 20479320 is 2397402.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58506 + ... + 58854.

Almost surely, 2^20479320 is an apocalyptic number.

20479320 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 20479320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33579000).

20479320 is an abundant number, since it is smaller than the sum of its proper divisors (46678680).

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

20479320 is a wasteful number, since it uses less digits than its factorization.

20479320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529 (or 522 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 20479320 is about 4525.4082688748. The cubic root of 20479320 is about 273.5931233524.

It can be divided in two parts, 204 and 79320, that added together give a square (79524 = 282²).

The spelling of 20479320 in words is "twenty million, four hundred seventy-nine thousand, three hundred twenty".