20967430 has 16 divisors (see below), whose sum is σ = 41172624. Its totient is φ = 7624480.

The previous prime is 20967413. The next prime is 20967433. The reversal of 20967430 is 3476902.

It is a junction number, because it is equal to n+sod(n) for n = 20967392 and 20967401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20967433) 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, 95197 + ... + 95416.

It is an arithmetic number, because the mean of its divisors is an integer number (2573289).

Almost surely, 2^20967430 is an apocalyptic number.

20967430 is a deficient number, since it is larger than the sum of its proper divisors (20205194).

20967430 is a wasteful number, since it uses less digits than its factorization.

20967430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190631.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 20967430 is about 4579.0206376473. The cubic root of 20967430 is about 275.7497118354.

The spelling of 20967430 in words is "twenty million, nine hundred sixty-seven thousand, four hundred thirty".