1420628478 has 16 divisors (see below), whose sum is σ = 2841628800. Its totient is φ = 473480856.

The previous prime is 1420628381. The next prime is 1420628479. The reversal of 1420628478 is 8748260241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1420628479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73473 + ... + 90771.

It is an arithmetic number, because the mean of its divisors is an integer number (177601800).

Almost surely, 2^1420628478 is an apocalyptic number.

1420628478 is an abundant number, since it is smaller than the sum of its proper divisors (1421000322).

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

1420628478 is a wasteful number, since it uses less digits than its factorization.

1420628478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30991.

The product of its (nonzero) digits is 172032, while the sum is 42.

The square root of 1420628478 is about 37691.2254775564. The cubic root of 1420628478 is about 1124.1566625815.

The spelling of 1420628478 in words is "one billion, four hundred twenty million, six hundred twenty-eight thousand, four hundred seventy-eight".