1440000078 has 32 divisors (see below), whose sum is σ = 3152096640. Its totient is φ = 434936160.

The previous prime is 1440000043. The next prime is 1440000083. The reversal of 1440000078 is 8700000441.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15273 + ... + 55796.

It is an arithmetic number, because the mean of its divisors is an integer number (98503020).

Almost surely, 2^1440000078 is an apocalyptic number.

1440000078 is an abundant number, since it is smaller than the sum of its proper divisors (1712096562).

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

1440000078 is a wasteful number, since it uses less digits than its factorization.

1440000078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71392.

The product of its (nonzero) digits is 896, while the sum is 24.

The square root of 1440000078 is about 37947.3329497608. The cubic root of 1440000078 is about 1129.2432550463.

The spelling of 1440000078 in words is "one billion, four hundred forty million, seventy-eight", and thus it is an aban number.