7820256204 has 72 divisors (see below), whose sum is σ = 20013673680. Its totient is φ = 2574536832.

The previous prime is 7820256161. The next prime is 7820256247. The reversal of 7820256204 is 4026520287.

7820256204 is a `hidden beast` number, since 7 + 8 + 2 + 0 + 25 + 620 + 4 = 666.

It is an interprime number because it is at equal distance from previous prime (7820256161) and next prime (7820256247).

It is a super-2 number, since 2×7820256204² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 981822 + ... + 989754.

It is an arithmetic number, because the mean of its divisors is an integer number (277967690).

Almost surely, 2^7820256204 is an apocalyptic number.

It is an amenable number.

7820256204 is an abundant number, since it is smaller than the sum of its proper divisors (12193417476).

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

7820256204 is a wasteful number, since it uses less digits than its factorization.

7820256204 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8279 (or 8274 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 36.

The square root of 7820256204 is about 88432.2124793901. The cubic root of 7820256204 is about 1984.9077487810.

The spelling of 7820256204 in words is "seven billion, eight hundred twenty million, two hundred fifty-six thousand, two hundred four".