20404302 has 8 divisors (see below), whose sum is σ = 40808616. Its totient is φ = 6801432.

The previous prime is 20404261. The next prime is 20404331. The reversal of 20404302 is 20340402.

It is a happy number.

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

20404302 is an admirable number.

It is a congruent number.

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, 1700353 + ... + 1700364.

It is an arithmetic number, because the mean of its divisors is an integer number (5101077).

Almost surely, 2^20404302 is an apocalyptic number.

20404302 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20404302 is a wasteful number, since it uses less digits than its factorization.

20404302 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3400722.

The product of its (nonzero) digits is 192, while the sum is 15.

The square root of 20404302 is about 4517.1121305542. The cubic root of 20404302 is about 273.2586473849.

Adding to 20404302 its reverse (20340402), we get a palindrome (40744704).

It can be divided in two parts, 20404 and 302, that added together give a triangular number (20706 = T₂₀₃).

The spelling of 20404302 in words is "twenty million, four hundred four thousand, three hundred two".