20898346 has 8 divisors (see below), whose sum is σ = 35825760. Its totient is φ = 8956428.

The previous prime is 20898343. The next prime is 20898349. The reversal of 20898346 is 64389802.

It is an interprime number because it is at equal distance from previous prime (20898343) and next prime (20898349).

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

It is a junction number, because it is equal to n+sod(n) for n = 20898299 and 20898308.

It is not an unprimeable number, because it can be changed into a prime (20898343) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 746356 + ... + 746383.

It is an arithmetic number, because the mean of its divisors is an integer number (4478220).

Almost surely, 2^20898346 is an apocalyptic number.

20898346 is a deficient number, since it is larger than the sum of its proper divisors (14927414).

20898346 is a wasteful number, since it uses less digits than its factorization.

20898346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1492748.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 20898346 is about 4571.4708792685. The cubic root of 20898346 is about 275.4465296541.

The spelling of 20898346 in words is "twenty million, eight hundred ninety-eight thousand, three hundred forty-six".