820148 has 24 divisors (see below), whose sum is σ = 1737792. Its totient is φ = 330624.

The previous prime is 820133. The next prime is 820163. The reversal of 820148 is 841028.

It is an interprime number because it is at equal distance from previous prime (820133) and next prime (820163).

It is an Ulam number.

It is a congruent number.

It is an unprimeable number.

820148 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, 386 + ... + 1337.

It is an arithmetic number, because the mean of its divisors is an integer number (72408).

2⁸²⁰¹⁴⁸ is an apocalyptic number.

It is an amenable number.

820148 is an abundant number, since it is smaller than the sum of its proper divisors (917644).

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

820148 is a wasteful number, since it uses less digits than its factorization.

820148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1751 (or 1749 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 23.

The square root of 820148 is about 905.6202294560. The cubic root of 820148 is about 93.6046470530.

The spelling of 820148 in words is "eight hundred twenty thousand, one hundred forty-eight".