20412953 has 4 divisors (see below), whose sum is σ = 22268688. Its totient is φ = 18557220.

The previous prime is 20412949. The next prime is 20412967. The reversal of 20412953 is 35921402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20412953 - 2² = 20412949 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20412913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 927851 + ... + 927872.

It is an arithmetic number, because the mean of its divisors is an integer number (5567172).

Almost surely, 2^20412953 is an apocalyptic number.

It is an amenable number.

20412953 is a deficient number, since it is larger than the sum of its proper divisors (1855735).

20412953 is a wasteful number, since it uses less digits than its factorization.

20412953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855734.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 20412953 is about 4518.0696099109. The cubic root of 20412953 is about 273.2972605909.

It can be divided in two parts, 2041 and 2953, that added together give a palindrome (4994).

The spelling of 20412953 in words is "twenty million, four hundred twelve thousand, nine hundred fifty-three".