1002402220 has 12 divisors (see below), whose sum is σ = 2105044704. Its totient is φ = 400960880.

The previous prime is 1002402199. The next prime is 1002402221. The reversal of 1002402220 is 222042001.

It is a self number, because there is not a number n which added to its sum of digits gives 1002402220.

It is not an unprimeable number, because it can be changed into a prime (1002402221) 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, 25060036 + ... + 25060075.

It is an arithmetic number, because the mean of its divisors is an integer number (175420392).

Almost surely, 2^1002402220 is an apocalyptic number.

1002402220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002402220 is an abundant number, since it is smaller than the sum of its proper divisors (1102642484).

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

1002402220 is a wasteful number, since it uses less digits than its factorization.

1002402220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50120120 (or 50120118 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 1002402220 is about 31660.7362517046. The cubic root of 1002402220 is about 1000.8000996698.

Adding to 1002402220 its reverse (222042001), we get a palindrome (1224444221).

The spelling of 1002402220 in words is "one billion, two million, four hundred two thousand, two hundred twenty".