20078612 has 12 divisors (see below), whose sum is σ = 35500500. Its totient is φ = 9935616.

The previous prime is 20078603. The next prime is 20078623. The reversal of 20078612 is 21687002.

It can be written as a sum of positive squares in 2 ways, for example, as 11587216 + 8491396 = 3404^2 + 2914^2 .

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, 25487 + ... + 26262.

It is an arithmetic number, because the mean of its divisors is an integer number (2958375).

Almost surely, 2^20078612 is an apocalyptic number.

It is an amenable number.

20078612 is a deficient number, since it is larger than the sum of its proper divisors (15421888).

20078612 is a wasteful number, since it uses less digits than its factorization.

20078612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51850 (or 51848 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 26.

The square root of 20078612 is about 4480.9164241258. The cubic root of 20078612 is about 271.7969397070.

The spelling of 20078612 in words is "twenty million, seventy-eight thousand, six hundred twelve".