20088540 has 48 divisors (see below), whose sum is σ = 62499360. Its totient is φ = 5356800.

The previous prime is 20088539. The next prime is 20088559. The reversal of 20088540 is 4588002.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 18061 + ... + 19140.

It is an arithmetic number, because the mean of its divisors is an integer number (1302070).

Almost surely, 2^20088540 is an apocalyptic number.

20088540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20088540 is an abundant number, since it is smaller than the sum of its proper divisors (42410820).

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

20088540 is a wasteful number, since it uses less digits than its factorization.

20088540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37219 (or 37211 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 20088540 is about 4482.0240963208. The cubic root of 20088540 is about 271.8417295791.

The spelling of 20088540 in words is "twenty million, eighty-eight thousand, five hundred forty".