20003398 has 8 divisors (see below), whose sum is σ = 30427920. Its totient is φ = 9860760.

The previous prime is 20003393. The next prime is 20003443. The reversal of 20003398 is 89330002.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20003393) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70293 + ... + 70576.

It is an arithmetic number, because the mean of its divisors is an integer number (3803490).

Almost surely, 2^20003398 is an apocalyptic number.

20003398 is a deficient number, since it is larger than the sum of its proper divisors (10424522).

20003398 is a wasteful number, since it uses less digits than its factorization.

20003398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140942.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 20003398 is about 4472.5158468137. The cubic root of 20003398 is about 271.4571334407.

The spelling of 20003398 in words is "twenty million, three thousand, three hundred ninety-eight".