20848407 has 4 divisors (see below), whose sum is σ = 27797880. Its totient is φ = 13898936.

The previous prime is 20848393. The next prime is 20848423. The reversal of 20848407 is 70484802.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 20848407 - 2⁶ = 20848343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20848007) 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, 3474732 + ... + 3474737.

It is an arithmetic number, because the mean of its divisors is an integer number (6949470).

Almost surely, 2^20848407 is an apocalyptic number.

20848407 is a deficient number, since it is larger than the sum of its proper divisors (6949473).

20848407 is an equidigital number, since it uses as much as digits as its factorization.

20848407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6949472.

The product of its (nonzero) digits is 14336, while the sum is 33.

The square root of 20848407 is about 4566.0055847535. The cubic root of 20848407 is about 275.2269509433.

The spelling of 20848407 in words is "twenty million, eight hundred forty-eight thousand, four hundred seven".