820290552 has 32 divisors (see below), whose sum is σ = 2062067280. Its totient is φ = 271918080.

The previous prime is 820290551. The next prime is 820290557. The reversal of 820290552 is 255092028.

820290552 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (820290551) 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, 90073 + ... + 98760.

Almost surely, 2^820290552 is an apocalyptic number.

It is an amenable number.

820290552 is an abundant number, since it is smaller than the sum of its proper divisors (1241776728).

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

820290552 is a wasteful number, since it uses less digits than its factorization.

820290552 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189023 (or 189019 counting only the distinct ones).

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 820290552 is about 28640.7149352107. The cubic root of 820290552 is about 936.1006995903.

The spelling of 820290552 in words is "eight hundred twenty million, two hundred ninety thousand, five hundred fifty-two".