20246855 has 8 divisors (see below), whose sum is σ = 24339312. Its totient is φ = 16168768.

The previous prime is 20246833. The next prime is 20246867. The reversal of 20246855 is 55864202.

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

It is a cyclic number.

It is not a de Polignac number, because 20246855 - 2⁶ = 20246791 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, 197 + ... + 6366.

It is an arithmetic number, because the mean of its divisors is an integer number (3042414).

Almost surely, 2^20246855 is an apocalyptic number.

20246855 is a deficient number, since it is larger than the sum of its proper divisors (4092457).

20246855 is an equidigital number, since it uses as much as digits as its factorization.

20246855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7185.

The product of its (nonzero) digits is 19200, while the sum is 32.

The square root of 20246855 is about 4499.6505419866. The cubic root of 20246855 is about 272.5539774677.

The spelling of 20246855 in words is "twenty million, two hundred forty-six thousand, eight hundred fifty-five".