1020340220 has 24 divisors (see below), whose sum is σ = 2156911008. Its totient is φ = 405432000.

The previous prime is 1020340213. The next prime is 1020340247. The reversal of 1020340220 is 220430201.

It is a junction number, because it is equal to n+sod(n) for n = 1020340195 and 1020340204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165911 + ... + 171950.

It is an arithmetic number, because the mean of its divisors is an integer number (89871292).

Almost surely, 2^1020340220 is an apocalyptic number.

1020340220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020340220 is an abundant number, since it is smaller than the sum of its proper divisors (1136570788).

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

1020340220 is a wasteful number, since it uses less digits than its factorization.

1020340220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 338021 (or 338019 counting only the distinct ones).

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

The square root of 1020340220 is about 31942.7647519747. The cubic root of 1020340220 is about 1006.7346164582.

Adding to 1020340220 its reverse (220430201), we get a palindrome (1240770421).

The spelling of 1020340220 in words is "one billion, twenty million, three hundred forty thousand, two hundred twenty".