20605098 has 16 divisors (see below), whose sum is σ = 41576256. Its totient is φ = 6807360.

The previous prime is 20605073. The next prime is 20605099. The reversal of 20605098 is 89050602.

It is not an unprimeable number, because it can be changed into a prime (20605099) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14518 + ... + 15873.

It is an arithmetic number, because the mean of its divisors is an integer number (2598516).

Almost surely, 2^20605098 is an apocalyptic number.

20605098 is an abundant number, since it is smaller than the sum of its proper divisors (20971158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20605098 is a wasteful number, since it uses less digits than its factorization.

20605098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30509.

The product of its (nonzero) digits is 4320, while the sum is 30.

The square root of 20605098 is about 4539.2838642235. The cubic root of 20605098 is about 274.1520902483.

The spelling of 20605098 in words is "twenty million, six hundred five thousand, ninety-eight".