1406426478 has 16 divisors (see below), whose sum is σ = 2840163456. Its totient is φ = 464257080.

The previous prime is 1406426459. The next prime is 1406426491. The reversal of 1406426478 is 8746246041.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1137268 + ... + 1138503.

It is an arithmetic number, because the mean of its divisors is an integer number (177510216).

Almost surely, 2^1406426478 is an apocalyptic number.

1406426478 is an abundant number, since it is smaller than the sum of its proper divisors (1433736978).

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

1406426478 is a wasteful number, since it uses less digits than its factorization.

1406426478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2275879.

The product of its (nonzero) digits is 258048, while the sum is 42.

The square root of 1406426478 is about 37502.3529661807. The cubic root of 1406426478 is about 1120.3980510106.

The spelling of 1406426478 in words is "one billion, four hundred six million, four hundred twenty-six thousand, four hundred seventy-eight".