820146204 has 36 divisors (see below), whose sum is σ = 2079716184. Its totient is φ = 272515872.

The previous prime is 820146179. The next prime is 820146227. The reversal of 820146204 is 402641028.

820146204 is a `hidden beast` number, since 8 + 20 + 14 + 620 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24522 + ... + 47345.

It is an arithmetic number, because the mean of its divisors is an integer number (57769894).

Almost surely, 2^820146204 is an apocalyptic number.

It is an amenable number.

820146204 is an abundant number, since it is smaller than the sum of its proper divisors (1259569980).

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

820146204 is a wasteful number, since it uses less digits than its factorization.

820146204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72194 (or 72189 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 820146204 is about 28638.1948453460. The cubic root of 820146204 is about 936.0457872627.

The spelling of 820146204 in words is "eight hundred twenty million, one hundred forty-six thousand, two hundred four".