20439962 has 8 divisors (see below), whose sum is σ = 31993056. Its totient is φ = 9775612.

The previous prime is 20439959. The next prime is 20440039. The reversal of 20439962 is 26993402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20439962² = 835584093122888, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222128 + ... + 222219.

It is an arithmetic number, because the mean of its divisors is an integer number (3999132).

Almost surely, 2^20439962 is an apocalyptic number.

20439962 is a deficient number, since it is larger than the sum of its proper divisors (11553094).

20439962 is a wasteful number, since it uses less digits than its factorization.

20439962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444372.

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 20439962 is about 4521.0576196284. The cubic root of 20439962 is about 273.4177434455.

The spelling of 20439962 in words is "twenty million, four hundred thirty-nine thousand, nine hundred sixty-two".