20434634 has 16 divisors (see below), whose sum is σ = 33988896. Its totient is φ = 9135600.

The previous prime is 20434607. The next prime is 20434643. The reversal of 20434634 is 43643402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6272 + ... + 8955.

It is an arithmetic number, because the mean of its divisors is an integer number (2124306).

Almost surely, 2^20434634 is an apocalyptic number.

20434634 is a deficient number, since it is larger than the sum of its proper divisors (13554262).

20434634 is a wasteful number, since it uses less digits than its factorization.

20434634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15301.

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 20434634 is about 4520.4683385685. The cubic root of 20434634 is about 273.3939844918.

The spelling of 20434634 in words is "twenty million, four hundred thirty-four thousand, six hundred thirty-four".