1420704288 has 72 divisors (see below), whose sum is σ = 4044959100. Its totient is φ = 473001984.

The previous prime is 1420704283. The next prime is 1420704293. The reversal of 1420704288 is 8824070241.

It is an interprime number because it is at equal distance from previous prime (1420704283) and next prime (1420704293).

It can be written as a sum of positive squares in 2 ways, for example, as 1420686864 + 17424 = 37692^2 + 132^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (1420704283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 288148 + ... + 293036.

Almost surely, 2^1420704288 is an apocalyptic number.

1420704288 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1420704288 is an abundant number, since it is smaller than the sum of its proper divisors (2624254812).

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

1420704288 is a wasteful number, since it uses less digits than its factorization.

1420704288 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5914 (or 5903 counting only the distinct ones).

The product of its (nonzero) digits is 28672, while the sum is 36.

The square root of 1420704288 is about 37692.2311358720. The cubic root of 1420704288 is about 1124.1766586142.

The spelling of 1420704288 in words is "one billion, four hundred twenty million, seven hundred four thousand, two hundred eighty-eight".