20466424 has 24 divisors (see below), whose sum is σ = 42182280. Its totient is φ = 9302480.

The previous prime is 20466377. The next prime is 20466437. The reversal of 20466424 is 42466402.

It is a super-2 number, since 2×20466424² = 837749022695552, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20466392 and 20466401.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9604 + ... + 11539.

It is an arithmetic number, because the mean of its divisors is an integer number (1757595).

Almost surely, 2^20466424 is an apocalyptic number.

It is an amenable number.

20466424 is an abundant number, since it is smaller than the sum of its proper divisors (21715856).

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

20466424 is a wasteful number, since it uses less digits than its factorization.

20466424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21171 (or 21156 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 20466424 is about 4523.9832006761. The cubic root of 20466424 is about 273.5356833304.

The spelling of 20466424 in words is "twenty million, four hundred sixty-six thousand, four hundred twenty-four".