20601340 has 12 divisors (see below), whose sum is σ = 43262856. Its totient is φ = 8240528.

The previous prime is 20601323. The next prime is 20601367. The reversal of 20601340 is 4310602.

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, 515014 + ... + 515053.

It is an arithmetic number, because the mean of its divisors is an integer number (3605238).

Almost surely, 2^20601340 is an apocalyptic number.

20601340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20601340 is an abundant number, since it is smaller than the sum of its proper divisors (22661516).

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

20601340 is a wasteful number, since it uses less digits than its factorization.

20601340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1030076 (or 1030074 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 20601340 is about 4538.8699034011. The cubic root of 20601340 is about 274.1354224282.

Adding to 20601340 its reverse (4310602), we get a palindrome (24911942).

The spelling of 20601340 in words is "twenty million, six hundred one thousand, three hundred forty".