2146278456 has 96 divisors (see below), whose sum is σ = 6992918400. Its totient is φ = 580944960.

The previous prime is 2146278443. The next prime is 2146278457. The reversal of 2146278456 is 6548726412.

2146278456 is a `hidden beast` number, since 2 + 14 + 627 + 8 + 4 + 5 + 6 = 666.

It is a super-2 number, since 2×2146278456² = 9213022421379487872, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2146278457) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 102490 + ... + 121641.

It is an arithmetic number, because the mean of its divisors is an integer number (72842900).

Almost surely, 2^2146278456 is an apocalyptic number.

It is an amenable number.

2146278456 is an abundant number, since it is smaller than the sum of its proper divisors (4846639944).

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

2146278456 is a wasteful number, since it uses less digits than its factorization.

2146278456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224169 (or 224162 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 2146278456 is about 46327.9446554669. The cubic root of 2146278456 is about 1289.9177593145.

The spelling of 2146278456 in words is "two billion, one hundred forty-six million, two hundred seventy-eight thousand, four hundred fifty-six".