20984324 has 24 divisors (see below), whose sum is σ = 39028248. Its totient is φ = 9838080.

The previous prime is 20984321. The next prime is 20984339. The reversal of 20984324 is 42348902.

It can be written as a sum of positive squares in 4 ways, for example, as 4840000 + 16144324 = 2200^2 + 4018^2 .

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20984321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28262 + ... + 28994.

It is an arithmetic number, because the mean of its divisors is an integer number (1626177).

Almost surely, 2^20984324 is an apocalyptic number.

It is an amenable number.

20984324 is a deficient number, since it is larger than the sum of its proper divisors (18043924).

20984324 is a wasteful number, since it uses less digits than its factorization.

20984324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1175 (or 1173 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 32.

The square root of 20984324 is about 4580.8649838213. The cubic root of 20984324 is about 275.8237515091.

The spelling of 20984324 in words is "twenty million, nine hundred eighty-four thousand, three hundred twenty-four".