20465455 has 8 divisors (see below), whose sum is σ = 24583104. Its totient is φ = 16356000.

The previous prime is 20465449. The next prime is 20465491. The reversal of 20465455 is 55456402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20465455 - 2³ = 20465447 is a prime.

It is a Duffinian number.

It is a congruent number.

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 in 7 ways as a sum of consecutive naturals, for example, 7530 + ... + 9880.

It is an arithmetic number, because the mean of its divisors is an integer number (3072888).

Almost surely, 2^20465455 is an apocalyptic number.

20465455 is a deficient number, since it is larger than the sum of its proper divisors (4117649).

20465455 is a wasteful number, since it uses less digits than its factorization.

20465455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4097.

The product of its (nonzero) digits is 24000, while the sum is 31.

The square root of 20465455 is about 4523.8761035201. The cubic root of 20465455 is about 273.5313663369.

The spelling of 20465455 in words is "twenty million, four hundred sixty-five thousand, four hundred fifty-five".