20602240 has 32 divisors (see below), whose sum is σ = 49253760. Its totient is φ = 8240640.

The previous prime is 20602237. The next prime is 20602243. The reversal of 20602240 is 4220602.

It is an interprime number because it is at equal distance from previous prime (20602237) and next prime (20602243).

It is a tau number, because it is divible by the number of its divisors (32).

It is a Harshad number since it is a multiple of its sum of digits (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20602243) 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, 15456 + ... + 16735.

It is an arithmetic number, because the mean of its divisors is an integer number (1539180).

Almost surely, 2^20602240 is an apocalyptic number.

20602240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20602240 is an abundant number, since it is smaller than the sum of its proper divisors (28651520).

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

20602240 is an equidigital number, since it uses as much as digits as its factorization.

20602240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32210 (or 32198 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 20602240 is about 4538.9690459398. The cubic root of 20602240 is about 274.1394143739.

Adding to 20602240 its reverse (4220602), we get a palindrome (24822842).

The spelling of 20602240 in words is "twenty million, six hundred two thousand, two hundred forty".