820488 has 32 divisors (see below), whose sum is σ = 2172960. Its totient is φ = 257280.

The previous prime is 820481. The next prime is 820489. The reversal of 820488 is 884028.

It is not an unprimeable number, because it can be changed into a prime (820481) by changing a digit.

820488 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 598 + ... + 1413.

It is an arithmetic number, because the mean of its divisors is an integer number (67905).

2⁸²⁰⁴⁸⁸ is an apocalyptic number.

It is an amenable number.

820488 is an abundant number, since it is smaller than the sum of its proper divisors (1352472).

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

820488 is a wasteful number, since it uses less digits than its factorization.

820488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2037 (or 2033 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 30.

The square root of 820488 is about 905.8079266600. The cubic root of 820488 is about 93.6175801590.

The spelling of 820488 in words is "eight hundred twenty thousand, four hundred eighty-eight".