816510252 has 24 divisors (see below), whose sum is σ = 1923690496. Its totient is φ = 269527248.

The previous prime is 816510251. The next prime is 816510257. The reversal of 816510252 is 252015618.

816510252 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×816510252² = 1333377983242207008, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (816510251) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329068 + ... + 331539.

Almost surely, 2^816510252 is an apocalyptic number.

It is an amenable number.

816510252 is an abundant number, since it is smaller than the sum of its proper divisors (1107180244).

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

816510252 is a wasteful number, since it uses less digits than its factorization.

816510252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660717 (or 660715 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 30.

The square root of 816510252 is about 28574.6435148367. The cubic root of 816510252 is about 934.6604816453.

The spelling of 816510252 in words is "eight hundred sixteen million, five hundred ten thousand, two hundred fifty-two".