20147404 has 6 divisors (see below), whose sum is σ = 35257964. Its totient is φ = 10073700.

The previous prime is 20147399. The next prime is 20147417. The reversal of 20147404 is 40474102.

It is a plaindrome in base 16.

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 as a sum of consecutive naturals, namely, 2518422 + ... + 2518429.

Almost surely, 2^20147404 is an apocalyptic number.

It is an amenable number.

20147404 is a deficient number, since it is larger than the sum of its proper divisors (15110560).

20147404 is a wasteful number, since it uses less digits than its factorization.

20147404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5036855 (or 5036853 counting only the distinct ones).

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 20147404 is about 4488.5859688771. The cubic root of 20147404 is about 272.1069900615.

The spelling of 20147404 in words is "twenty million, one hundred forty-seven thousand, four hundred four".