820752126 has 16 divisors (see below), whose sum is σ = 1659949200. Its totient is φ = 270509888.

The previous prime is 820752103. The next prime is 820752131. The reversal of 820752126 is 621257028.

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, 767961 + ... + 769028.

It is an arithmetic number, because the mean of its divisors is an integer number (103746825).

Almost surely, 2^820752126 is an apocalyptic number.

820752126 is an abundant number, since it is smaller than the sum of its proper divisors (839197074).

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

820752126 is a wasteful number, since it uses less digits than its factorization.

820752126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1537083.

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 820752126 is about 28648.7718061351. The cubic root of 820752126 is about 936.2762466268.

The spelling of 820752126 in words is "eight hundred twenty million, seven hundred fifty-two thousand, one hundred twenty-six".