20699402 has 8 divisors (see below), whose sum is σ = 32399136. Its totient is φ = 9899692.

The previous prime is 20699401. The next prime is 20699407. The reversal of 20699402 is 20499602.

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

It is not an unprimeable number, because it can be changed into a prime (20699401) 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 3 ways as a sum of consecutive naturals, for example, 224948 + ... + 225039.

It is an arithmetic number, because the mean of its divisors is an integer number (4049892).

Almost surely, 2^20699402 is an apocalyptic number.

20699402 is a deficient number, since it is larger than the sum of its proper divisors (11699734).

20699402 is a wasteful number, since it uses less digits than its factorization.

20699402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450012.

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 20699402 is about 4549.6595477024. The cubic root of 20699402 is about 274.5696939723.

The spelling of 20699402 in words is "twenty million, six hundred ninety-nine thousand, four hundred two".