20475141 has 16 divisors (see below), whose sum is σ = 29107200. Its totient is φ = 12765168.

The previous prime is 20475121. The next prime is 20475149. The reversal of 20475141 is 14157402.

It is a de Polignac number, because none of the positive numbers 2^k-20475141 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20475149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2230 + ... + 6776.

It is an arithmetic number, because the mean of its divisors is an integer number (1819200).

Almost surely, 2^20475141 is an apocalyptic number.

It is an amenable number.

20475141 is a deficient number, since it is larger than the sum of its proper divisors (8632059).

20475141 is a wasteful number, since it uses less digits than its factorization.

20475141 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4648.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 20475141 is about 4524.9465190210. The cubic root of 20475141 is about 273.5745123268.

The spelling of 20475141 in words is "twenty million, four hundred seventy-five thousand, one hundred forty-one".