20678296 has 8 divisors (see below), whose sum is σ = 38771820. Its totient is φ = 10339144.

The previous prime is 20678291. The next prime is 20678297. The reversal of 20678296 is 69287602.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20678291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1292386 + ... + 1292401.

Almost surely, 2^20678296 is an apocalyptic number.

It is an amenable number.

20678296 is a deficient number, since it is larger than the sum of its proper divisors (18093524).

20678296 is a wasteful number, since it uses less digits than its factorization.

20678296 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2584793 (or 2584789 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 20678296 is about 4547.3394419155. The cubic root of 20678296 is about 274.4763412157.

The spelling of 20678296 in words is "twenty million, six hundred seventy-eight thousand, two hundred ninety-six".