52821828 has 48 divisors (see below), whose sum is σ = 137410560. Its totient is φ = 17547552.

The previous prime is 52821809. The next prime is 52821833. The reversal of 52821828 is 82812825.

It is a happy number.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 52821792 and 52821801.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40726 + ... + 42002.

It is an arithmetic number, because the mean of its divisors is an integer number (2862720).

Almost surely, 2^52821828 is an apocalyptic number.

It is an amenable number.

52821828 is an abundant number, since it is smaller than the sum of its proper divisors (84588732).

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

52821828 is a wasteful number, since it uses less digits than its factorization.

52821828 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1673 (or 1665 counting only the distinct ones).

The product of its digits is 20480, while the sum is 36.

The square root of 52821828 is about 7267.8626844486. The cubic root of 52821828 is about 375.2071815144.

The spelling of 52821828 in words is "fifty-two million, eight hundred twenty-one thousand, eight hundred twenty-eight".