20067320 has 128 divisors (see below), whose sum is σ = 57456000. Its totient is φ = 6137856.

The previous prime is 20067319. The next prime is 20067367. The reversal of 20067320 is 2376002.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 20067292 and 20067301.

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 31 ways as a sum of consecutive naturals, for example, 134606 + ... + 134754.

It is an arithmetic number, because the mean of its divisors is an integer number (448875).

Almost surely, 2^20067320 is an apocalyptic number.

20067320 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 20067320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28728000).

20067320 is an abundant number, since it is smaller than the sum of its proper divisors (37388680).

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

20067320 is a wasteful number, since it uses less digits than its factorization.

20067320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 20.

The square root of 20067320 is about 4479.6562368110. The cubic root of 20067320 is about 271.7459782400.

The spelling of 20067320 in words is "twenty million, sixty-seven thousand, three hundred twenty".