20641430 has 8 divisors (see below), whose sum is σ = 37154592. Its totient is φ = 8256568.

The previous prime is 20641403. The next prime is 20641457. The reversal of 20641430 is 3414602.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20641403) and next prime (20641457).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1032062 + ... + 1032081.

It is an arithmetic number, because the mean of its divisors is an integer number (4644324).

Almost surely, 2^20641430 is an apocalyptic number.

20641430 is a deficient number, since it is larger than the sum of its proper divisors (16513162).

20641430 is a wasteful number, since it uses less digits than its factorization.

20641430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2064150.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 20641430 is about 4543.2840545139. The cubic root of 20641430 is about 274.3131287961.

The spelling of 20641430 in words is "twenty million, six hundred forty-one thousand, four hundred thirty".