20464633 has 8 divisors (see below), whose sum is σ = 24194880. Its totient is φ = 16936080.

The previous prime is 20464573. The next prime is 20464637. The reversal of 20464633 is 33646402.

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

It is not a de Polignac number, because 20464633 - 2¹⁷ = 20333561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20464637) 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, 50203 + ... + 50608.

It is an arithmetic number, because the mean of its divisors is an integer number (3024360).

Almost surely, 2^20464633 is an apocalyptic number.

It is an amenable number.

20464633 is a deficient number, since it is larger than the sum of its proper divisors (3730247).

20464633 is a wasteful number, since it uses less digits than its factorization.

20464633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100847.

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 20464633 is about 4523.7852513133. The cubic root of 20464633 is about 273.5277041365.

The spelling of 20464633 in words is "twenty million, four hundred sixty-four thousand, six hundred thirty-three".