1408220020 has 12 divisors (see below), whose sum is σ = 2957262084. Its totient is φ = 563288000.

The previous prime is 1408219999. The next prime is 1408220039. The reversal of 1408220020 is 200228041.

It can be written as a sum of positive squares in 2 ways, for example, as 943472656 + 464747364 = 30716^2 + 21558^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1408220020.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35205481 + ... + 35205520.

It is an arithmetic number, because the mean of its divisors is an integer number (246438507).

Almost surely, 2^1408220020 is an apocalyptic number.

1408220020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1408220020 is an abundant number, since it is smaller than the sum of its proper divisors (1549042064).

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

1408220020 is a wasteful number, since it uses less digits than its factorization.

1408220020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70411010 (or 70411008 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

The square root of 1408220020 is about 37526.2577404142. The cubic root of 1408220020 is about 1120.8741103477.

Adding to 1408220020 its reverse (200228041), we get a palindrome (1608448061).

The spelling of 1408220020 in words is "one billion, four hundred eight million, two hundred twenty thousand, twenty".