821210048 has 14 divisors (see below), whose sum is σ = 1629588816. Its totient is φ = 410604992.

The previous prime is 821210017. The next prime is 821210059. The reversal of 821210048 is 840012128.

It is a junction number, because it is equal to n+sod(n) for n = 821209999 and 821210026.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6415640 + ... + 6415767.

Almost surely, 2^821210048 is an apocalyptic number.

It is an amenable number.

821210048 is a deficient number, since it is larger than the sum of its proper divisors (808378768).

821210048 is a wasteful number, since it uses less digits than its factorization.

821210048 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12831419 (or 12831409 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 821210048 is about 28656.7626922512. The cubic root of 821210048 is about 936.4503397002.

The spelling of 821210048 in words is "eight hundred twenty-one million, two hundred ten thousand, forty-eight".