2078021236 has 12 divisors (see below), whose sum is σ = 3639393828. Its totient is φ = 1038194432.

The previous prime is 2078021221. The next prime is 2078021243. The reversal of 2078021236 is 6321208702.

It can be written as a sum of positive squares in 2 ways, for example, as 620308836 + 1457712400 = 24906^2 + 38180^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2078021198 and 2078021207.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 198301 + ... + 208516.

It is an arithmetic number, because the mean of its divisors is an integer number (303282819).

Almost surely, 2^2078021236 is an apocalyptic number.

It is an amenable number.

2078021236 is a deficient number, since it is larger than the sum of its proper divisors (1561372592).

2078021236 is a wasteful number, since it uses less digits than its factorization.

2078021236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 408098 (or 408096 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 2078021236 is about 45585.3182066332. The cubic root of 2078021236 is about 1276.0959406444.

Adding to 2078021236 its reverse (6321208702), we get a palindrome (8399229938).

The spelling of 2078021236 in words is "two billion, seventy-eight million, twenty-one thousand, two hundred thirty-six".