20602220 has 12 divisors (see below), whose sum is σ = 43264704. Its totient is φ = 8240880.

The previous prime is 20602217. The next prime is 20602223. The reversal of 20602220 is 2220602.

It is an interprime number because it is at equal distance from previous prime (20602217) and next prime (20602223).

It is a hoax number, since the sum of its digits (14) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20602195 and 20602204.

It is not an unprimeable number, because it can be changed into a prime (20602223) 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, 515036 + ... + 515075.

It is an arithmetic number, because the mean of its divisors is an integer number (3605392).

Almost surely, 2^20602220 is an apocalyptic number.

20602220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20602220 is an abundant number, since it is smaller than the sum of its proper divisors (22662484).

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

20602220 is a wasteful number, since it uses less digits than its factorization.

20602220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1030120 (or 1030118 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 20602220 is about 4538.9668427958. The cubic root of 20602220 is about 274.1393256652.

Adding to 20602220 its reverse (2220602), we get a palindrome (22822822).

The spelling of 20602220 in words is "twenty million, six hundred two thousand, two hundred twenty".