20339484 has 24 divisors (see below), whose sum is σ = 51773568. Its totient is φ = 6163440.

The previous prime is 20339467. The next prime is 20339489. The reversal of 20339484 is 48493302.

20339484 = 1591² + 1592² + ... + 1598².

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20339489) 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 7 ways as a sum of consecutive naturals, for example, 76912 + ... + 77175.

It is an arithmetic number, because the mean of its divisors is an integer number (2157232).

Almost surely, 2^20339484 is an apocalyptic number.

It is an amenable number.

20339484 is an abundant number, since it is smaller than the sum of its proper divisors (31434084).

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

20339484 is a wasteful number, since it uses less digits than its factorization.

20339484 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154105 (or 154103 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 20339484 is about 4509.9317068000. The cubic root of 20339484 is about 272.9689884134.

The spelling of 20339484 in words is "twenty million, three hundred thirty-nine thousand, four hundred eighty-four".