20087408 has 40 divisors (see below), whose sum is σ = 44699520. Its totient is φ = 8648640.

The previous prime is 20087399. The next prime is 20087413. The reversal of 20087408 is 80478002.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341 + ... + 6347.

It is an arithmetic number, because the mean of its divisors is an integer number (1117488).

Almost surely, 2^20087408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20087408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22349760).

20087408 is an abundant number, since it is smaller than the sum of its proper divisors (24612112).

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

20087408 is a wasteful number, since it uses less digits than its factorization.

20087408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6045 (or 6039 counting only the distinct ones).

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 20087408 is about 4481.8978123112. The cubic root of 20087408 is about 271.8366233408.

The spelling of 20087408 in words is "twenty million, eighty-seven thousand, four hundred eight".