821488 has 10 divisors (see below), whose sum is σ = 1591664. Its totient is φ = 410736.

The previous prime is 821479. The next prime is 821489. The reversal of 821488 is 884128.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (821489) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25656 + ... + 25687.

2⁸²¹⁴⁸⁸ is an apocalyptic number.

It is an amenable number.

821488 is a deficient number, since it is larger than the sum of its proper divisors (770176).

821488 is a wasteful number, since it uses less digits than its factorization.

821488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51351 (or 51345 counting only the distinct ones).

The product of its digits is 4096, while the sum is 31.

The square root of 821488 is about 906.3597519749. The cubic root of 821488 is about 93.6555980104.

The spelling of 821488 in words is "eight hundred twenty-one thousand, four hundred eighty-eight".