20487350 has 48 divisors (see below), whose sum is σ = 42049392. Its totient is φ = 7378560.

The previous prime is 20487343. The next prime is 20487359. The reversal of 20487350 is 5378402.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20487359) by changing a digit.

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, 27584 + ... + 28316.

It is an arithmetic number, because the mean of its divisors is an integer number (876029).

Almost surely, 2^20487350 is an apocalyptic number.

20487350 is an abundant number, since it is smaller than the sum of its proper divisors (21562042).

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

20487350 is a wasteful number, since it uses less digits than its factorization.

20487350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 801 (or 796 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 20487350 is about 4526.2953946909. The cubic root of 20487350 is about 273.6288775620.

The spelling of 20487350 in words is "twenty million, four hundred eighty-seven thousand, three hundred fifty".