20616434 has 8 divisors (see below), whose sum is σ = 30943920. Its totient is φ = 10301796.

The previous prime is 20616433. The next prime is 20616451. The reversal of 20616434 is 43461602.

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

It is not an unprimeable number, because it can be changed into a prime (20616433) 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 3 ways as a sum of consecutive naturals, for example, 4697 + ... + 7955.

It is an arithmetic number, because the mean of its divisors is an integer number (3867990).

Almost surely, 2^20616434 is an apocalyptic number.

20616434 is a deficient number, since it is larger than the sum of its proper divisors (10327486).

20616434 is a wasteful number, since it uses less digits than its factorization.

20616434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6424.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 20616434 is about 4540.5323476438. The cubic root of 20616434 is about 274.2023564226.

The spelling of 20616434 in words is "twenty million, six hundred sixteen thousand, four hundred thirty-four".