20605030 has 8 divisors (see below), whose sum is σ = 37089072. Its totient is φ = 8242008.

The previous prime is 20605021. The next prime is 20605043. The reversal of 20605030 is 3050602.

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

It is a super-2 number, since 2×20605030² = 849134522601800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20604995 and 20605013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1030242 + ... + 1030261.

It is an arithmetic number, because the mean of its divisors is an integer number (4636134).

Almost surely, 2^20605030 is an apocalyptic number.

20605030 is a deficient number, since it is larger than the sum of its proper divisors (16484042).

20605030 is a wasteful number, since it uses less digits than its factorization.

20605030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2060510.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 20605030 is about 4539.2763740491. The cubic root of 20605030 is about 274.1517886665.

Adding to 20605030 its reverse (3050602), we get a palindrome (23655632).

The spelling of 20605030 in words is "twenty million, six hundred five thousand, thirty".