20303402 has 8 divisors (see below), whose sum is σ = 34805856. Its totient is φ = 8701452.

The previous prime is 20303351. The next prime is 20303431. The reversal of 20303402 is 20430302.

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

It is a Harshad number since it is a multiple of its sum of digits (14), and also a Moran number because the ratio is a prime number: 1450243 = 20303402 / (2 + 0 + 3 + 0 + 3 + 4 + 0 + 2).

It is an unprimeable number.

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, 725108 + ... + 725135.

It is an arithmetic number, because the mean of its divisors is an integer number (4350732).

Almost surely, 2^20303402 is an apocalyptic number.

20303402 is a deficient number, since it is larger than the sum of its proper divisors (14502454).

20303402 is a wasteful number, since it uses less digits than its factorization.

20303402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1450252.

The product of its (nonzero) digits is 144, while the sum is 14.

The square root of 20303402 is about 4505.9296488072. The cubic root of 20303402 is about 272.8074783025.

Adding to 20303402 its reverse (20430302), we get a palindrome (40733704).

The spelling of 20303402 in words is "twenty million, three hundred three thousand, four hundred two".