20278096 has 10 divisors (see below), whose sum is σ = 39288842. Its totient is φ = 10139040.

The previous prime is 20278091. The next prime is 20278121. The reversal of 20278096 is 69087202.

It can be written as a sum of positive squares in only one way, i.e., 10890000 + 9388096 = 3300^2 + 3064^2 .

It is a super-2 number, since 2×20278096² = 822402354770432, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20278091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 633675 + ... + 633706.

Almost surely, 2^20278096 is an apocalyptic number.

It is an amenable number.

20278096 is a deficient number, since it is larger than the sum of its proper divisors (19010746).

20278096 is a wasteful number, since it uses less digits than its factorization.

20278096 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1267389 (or 1267383 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 20278096 is about 4503.1206956954. The cubic root of 20278096 is about 272.6940894846.

The spelling of 20278096 in words is "twenty million, two hundred seventy-eight thousand, ninety-six".