20494464 has 96 divisors (see below), whose sum is σ = 58405200. Its totient is φ = 6349824.

The previous prime is 20494433. The next prime is 20494493. The reversal of 20494464 is 46449402.

It is a tau number, because it is divible by the number of its divisors (96).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 386662 + ... + 386714.

Almost surely, 2^20494464 is an apocalyptic number.

20494464 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20494464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29202600).

20494464 is an abundant number, since it is smaller than the sum of its proper divisors (37910736).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20494464 is an equidigital number, since it uses as much as digits as its factorization.

20494464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 77 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 33.

The square root of 20494464 is about 4527.0811788613. The cubic root of 20494464 is about 273.6605454052.

The spelling of 20494464 in words is "twenty million, four hundred ninety-four thousand, four hundred sixty-four".