20120084 has 18 divisors (see below), whose sum is σ = 36472254. Its totient is φ = 9711520.

The previous prime is 20120081. The next prime is 20120143. The reversal of 20120084 is 48002102.

It can be written as a sum of positive squares in 3 ways, for example, as 228484 + 19891600 = 478^2 + 4460^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 374 + ... + 6354.

Almost surely, 2^20120084 is an apocalyptic number.

It is an amenable number.

20120084 is a deficient number, since it is larger than the sum of its proper divisors (16352170).

20120084 is a wasteful number, since it uses less digits than its factorization.

20120084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6043 (or 6012 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 17.

The square root of 20120084 is about 4485.5416618286. The cubic root of 20120084 is about 271.9839415260.

Adding to 20120084 its reverse (48002102), we get a palindrome (68122186).

The spelling of 20120084 in words is "twenty million, one hundred twenty thousand, eighty-four".