1000345020 has 24 divisors (see below), whose sum is σ = 2800966224. Its totient is φ = 266758656.

The previous prime is 1000345013. The next prime is 1000345069. The reversal of 1000345020 is 205430001.

1000345020 is digitally balanced in base 2 and base 6, because in such bases it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

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, 8336149 + ... + 8336268.

It is an arithmetic number, because the mean of its divisors is an integer number (116706926).

Almost surely, 2^1000345020 is an apocalyptic number.

1000345020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1000345020 is an abundant number, since it is smaller than the sum of its proper divisors (1800621204).

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

1000345020 is a wasteful number, since it uses less digits than its factorization.

1000345020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16672429 (or 16672427 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 1000345020 is about 31628.2313764143. The cubic root of 1000345020 is about 1000.1149934427.

Adding to 1000345020 its reverse (205430001), we get a palindrome (1205775021).

The spelling of 1000345020 in words is "one billion, three hundred forty-five thousand, twenty".