20446424 has 32 divisors (see below), whose sum is σ = 39285120. Its totient is φ = 9974016.

The previous prime is 20446423. The next prime is 20446429. The reversal of 20446424 is 42464402.

It is a junction number, because it is equal to n+sod(n) for n = 20446393 and 20446402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20446423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91577 + ... + 91799.

It is an arithmetic number, because the mean of its divisors is an integer number (1227660).

Almost surely, 2^20446424 is an apocalyptic number.

It is an amenable number.

20446424 is a deficient number, since it is larger than the sum of its proper divisors (18838696).

20446424 is a wasteful number, since it uses less digits than its factorization.

20446424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 459 (or 455 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

The square root of 20446424 is about 4521.7722189425. The cubic root of 20446424 is about 273.4465536638.

The spelling of 20446424 in words is "twenty million, four hundred forty-six thousand, four hundred twenty-four".