20402202 has 32 divisors (see below), whose sum is σ = 41684544. Its totient is φ = 6656000.

The previous prime is 20402201. The next prime is 20402203. The reversal of 20402202 is 20220402.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20402201) and next prime (20402203).

It is not an unprimeable number, because it can be changed into a prime (20402201) 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 15 ways as a sum of consecutive naturals, for example, 79258 + ... + 79514.

It is an arithmetic number, because the mean of its divisors is an integer number (1302642).

Almost surely, 2^20402202 is an apocalyptic number.

20402202 is an abundant number, since it is smaller than the sum of its proper divisors (21282342).

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

20402202 is a wasteful number, since it uses less digits than its factorization.

20402202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 494.

The product of its (nonzero) digits is 64, while the sum is 12.

The square root of 20402202 is about 4516.8796751740. The cubic root of 20402202 is about 273.2492725180.

Adding to 20402202 its reverse (20220402), we get a palindrome (40622604).

The spelling of 20402202 in words is "twenty million, four hundred two thousand, two hundred two".