20475788 has 6 divisors (see below), whose sum is σ = 35832636. Its totient is φ = 10237892.

The previous prime is 20475743. The next prime is 20475799. The reversal of 20475788 is 88757402.

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, 2559470 + ... + 2559477.

It is an arithmetic number, because the mean of its divisors is an integer number (5972106).

Almost surely, 2^20475788 is an apocalyptic number.

It is an amenable number.

20475788 is a deficient number, since it is larger than the sum of its proper divisors (15356848).

20475788 is a wasteful number, since it uses less digits than its factorization.

20475788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5118951 (or 5118949 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 41.

The square root of 20475788 is about 4525.0180110139. The cubic root of 20475788 is about 273.5773938836.

The spelling of 20475788 in words is "twenty million, four hundred seventy-five thousand, seven hundred eighty-eight".