20465413 has 4 divisors (see below), whose sum is σ = 21542560. Its totient is φ = 19388268.

The previous prime is 20465411. The next prime is 20465429. The reversal of 20465413 is 31456402.

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, and also an emirpimes, since its reverse is a distinct semiprime: 31456402 = 2 ⋅15728201.

It is a cyclic number.

It is not a de Polignac number, because 20465413 - 2¹ = 20465411 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20465411) 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, 538545 + ... + 538582.

It is an arithmetic number, because the mean of its divisors is an integer number (5385640).

Almost surely, 2^20465413 is an apocalyptic number.

It is an amenable number.

20465413 is a deficient number, since it is larger than the sum of its proper divisors (1077147).

20465413 is a wasteful number, since it uses less digits than its factorization.

20465413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1077146.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 20465413 is about 4523.8714614808. The cubic root of 20465413 is about 273.5311792195.

The spelling of 20465413 in words is "twenty million, four hundred sixty-five thousand, four hundred thirteen".