20567040 has 176 divisors, whose sum is σ = 71530368. Its totient is φ = 5013504.

The previous prime is 20567039. The next prime is 20567051. The reversal of 20567040 is 4076502.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 20567040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 199629 + ... + 199731.

Almost surely, 2^20567040 is an apocalyptic number.

20567040 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 20567040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35765184).

20567040 is an abundant number, since it is smaller than the sum of its proper divisors (50963328).

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

20567040 is a wasteful number, since it uses less digits than its factorization.

20567040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 144 (or 126 counting only the distinct ones).

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 20567040 is about 4535.0898557801. The cubic root of 20567040 is about 273.9831982167.

The spelling of 20567040 in words is "twenty million, five hundred sixty-seven thousand, forty".