1020852500 has 30 divisors (see below), whose sum is σ = 2232405714. Its totient is φ = 408340000.

The previous prime is 1020852479. The next prime is 1020852529. The reversal of 1020852500 is 52580201.

It can be written as a sum of positive squares in 5 ways, for example, as 627702916 + 393149584 = 25054^2 + 19828^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 201671 + ... + 206670.

Almost surely, 2^1020852500 is an apocalyptic number.

1020852500 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020852500 is an abundant number, since it is smaller than the sum of its proper divisors (1211553214).

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

1020852500 is an equidigital number, since it uses as much as digits as its factorization.

1020852500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408365 (or 408348 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1020852500 is about 31950.7824630321. The cubic root of 1020852500 is about 1006.9030712908.

The spelling of 1020852500 in words is "one billion, twenty million, eight hundred fifty-two thousand, five hundred".