402202220 has 96 divisors (see below), whose sum is σ = 1002710016. Its totient is φ = 132652800.

The previous prime is 402202217. The next prime is 402202223. The reversal of 402202220 is 22202204.

402202220 = 2345² + 2346² + ... + 2415².

It is an interprime number because it is at equal distance from previous prime (402202217) and next prime (402202223).

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a junction number, because it is equal to n+sod(n) for n = 402202195 and 402202204.

It is not an unprimeable number, because it can be changed into a prime (402202223) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 426950 + ... + 427890.

It is an arithmetic number, because the mean of its divisors is an integer number (10444896).

Almost surely, 2^402202220 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 402202220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (501355008).

402202220 is an abundant number, since it is smaller than the sum of its proper divisors (600507796).

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

402202220 is a wasteful number, since it uses less digits than its factorization.

402202220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071 (or 1069 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 14.

The square root of 402202220 is about 20054.9799301819. The cubic root of 402202220 is about 738.1560004431.

Adding to 402202220 its reverse (22202204), we get a palindrome (424404424).

The spelling of 402202220 in words is "four hundred two million, two hundred two thousand, two hundred twenty".