1278487470 has 32 divisors (see below), whose sum is σ = 3304399392. Its totient is φ = 314704512.

The previous prime is 1278487421. The next prime is 1278487477. The reversal of 1278487470 is 747848721.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1278487477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1638697 + ... + 1639476.

It is an arithmetic number, because the mean of its divisors is an integer number (103262481).

Almost surely, 2^1278487470 is an apocalyptic number.

1278487470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1278487470 is an abundant number, since it is smaller than the sum of its proper divisors (2025911922).

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

1278487470 is a wasteful number, since it uses less digits than its factorization.

1278487470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3278196.

The product of its (nonzero) digits is 702464, while the sum is 48.

The square root of 1278487470 is about 35755.9431423645. The cubic root of 1278487470 is about 1085.3392074399.

The spelling of 1278487470 in words is "one billion, two hundred seventy-eight million, four hundred eighty-seven thousand, four hundred seventy".