20404598 has 8 divisors (see below), whose sum is σ = 30647160. Its totient is φ = 10188880.

The previous prime is 20404591. The next prime is 20404679. The reversal of 20404598 is 89540402.

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 (20404591) 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, 4688 + ... + 7923.

It is an arithmetic number, because the mean of its divisors is an integer number (3830895).

Almost surely, 2^20404598 is an apocalyptic number.

20404598 is a deficient number, since it is larger than the sum of its proper divisors (10242562).

20404598 is a wasteful number, since it uses less digits than its factorization.

20404598 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13422.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 20404598 is about 4517.1448947316. The cubic root of 20404598 is about 273.2599687430.

The spelling of 20404598 in words is "twenty million, four hundred four thousand, five hundred ninety-eight".