1002403220 has 96 divisors (see below), whose sum is σ = 2606956800. Its totient is φ = 317146752.

The previous prime is 1002403217. The next prime is 1002403247. The reversal of 1002403220 is 223042001.

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 = 1002403195 and 1002403204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 305951 + ... + 309209.

It is an arithmetic number, because the mean of its divisors is an integer number (27155800).

Almost surely, 2^1002403220 is an apocalyptic number.

1002403220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1002403220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1303478400).

1002403220 is an abundant number, since it is smaller than the sum of its proper divisors (1604553580).

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

1002403220 is a wasteful number, since it uses less digits than its factorization.

1002403220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3314 (or 3286 counting only the distinct ones).

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

The square root of 1002403220 is about 31660.7520441319. The cubic root of 1002403220 is about 1000.8004324703.

Adding to 1002403220 its reverse (223042001), we get a palindrome (1225445221).

The spelling of 1002403220 in words is "one billion, two million, four hundred three thousand, two hundred twenty".