20413953 has 12 divisors (see below), whose sum is σ = 33699328. Its totient is φ = 11665080.

The previous prime is 20413951. The next prime is 20413963. The reversal of 20413953 is 35931402.

It is not a de Polignac number, because 20413953 - 2¹ = 20413951 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20413951) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 161953 + ... + 162078.

Almost surely, 2^20413953 is an apocalyptic number.

It is an amenable number.

20413953 is a deficient number, since it is larger than the sum of its proper divisors (13285375).

20413953 is a wasteful number, since it uses less digits than its factorization.

20413953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324044 (or 324041 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 20413953 is about 4518.1802752878. The cubic root of 20413953 is about 273.3017233259.

The spelling of 20413953 in words is "twenty million, four hundred thirteen thousand, nine hundred fifty-three".