800402020 has 48 divisors (see below), whose sum is σ = 1892814336. Its totient is φ = 281664000.

The previous prime is 800402017. The next prime is 800402039. The reversal of 800402020 is 20204008.

It is a junction number, because it is equal to n+sod(n) for n = 800401985 and 800402003.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51861 + ... + 65500.

It is an arithmetic number, because the mean of its divisors is an integer number (39433632).

Almost surely, 2^800402020 is an apocalyptic number.

It is an amenable number.

800402020 is an abundant number, since it is smaller than the sum of its proper divisors (1092412316).

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

800402020 is a wasteful number, since it uses less digits than its factorization.

800402020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117412 (or 117410 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 800402020 is about 28291.3771315572. The cubic root of 800402020 is about 928.4732416440.

Adding to 800402020 its reverse (20204008), we get a palindrome (820606028).

The spelling of 800402020 in words is "eight hundred million, four hundred two thousand, twenty".