20090484 has 24 divisors (see below), whose sum is σ = 52086720. Its totient is φ = 6696792.

The previous prime is 20090471. The next prime is 20090491. The reversal of 20090484 is 48409002.

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 7 ways as a sum of consecutive naturals, for example, 92904 + ... + 93119.

It is an arithmetic number, because the mean of its divisors is an integer number (2170280).

Almost surely, 2^20090484 is an apocalyptic number.

It is an amenable number.

20090484 is an abundant number, since it is smaller than the sum of its proper divisors (31996236).

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

20090484 is a wasteful number, since it uses less digits than its factorization.

20090484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186036 (or 186028 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 20090484 is about 4482.2409573784. The cubic root of 20090484 is about 271.8504981486.

Adding to 20090484 its reverse (48409002), we get a palindrome (68499486).

The spelling of 20090484 in words is "twenty million, ninety thousand, four hundred eighty-four".