20732444 has 12 divisors (see below), whose sum is σ = 36741600. Its totient is φ = 10234848.

The previous prime is 20732441. The next prime is 20732471. The reversal of 20732444 is 44423702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20732441) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32489 + ... + 33120.

It is an arithmetic number, because the mean of its divisors is an integer number (3061800).

Almost surely, 2^20732444 is an apocalyptic number.

It is an amenable number.

20732444 is a deficient number, since it is larger than the sum of its proper divisors (16009156).

20732444 is a wasteful number, since it uses less digits than its factorization.

20732444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65692 (or 65690 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 26.

The square root of 20732444 is about 4553.2893604514. The cubic root of 20732444 is about 274.7157128248.

The spelling of 20732444 in words is "twenty million, seven hundred thirty-two thousand, four hundred forty-four".