1020215252 has 12 divisors (see below), whose sum is σ = 2040430560. Its totient is φ = 437235096.

The previous prime is 1020215249. The next prime is 1020215281. The reversal of 1020215252 is 2525120201.

It is a happy number.

1020215252 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18218102 + ... + 18218157.

It is an arithmetic number, because the mean of its divisors is an integer number (170035880).

Almost surely, 2^1020215252 is an apocalyptic number.

It is an amenable number.

1020215252 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

1020215252 is a wasteful number, since it uses less digits than its factorization.

1020215252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36436270 (or 36436268 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 20.

The square root of 1020215252 is about 31940.8085683503. The cubic root of 1020215252 is about 1006.6935142370.

Adding to 1020215252 its reverse (2525120201), we get a palindrome (3545335453).

The spelling of 1020215252 in words is "one billion, twenty million, two hundred fifteen thousand, two hundred fifty-two".