1400720900 has 18 divisors (see below), whose sum is σ = 3039564570. Its totient is φ = 560288320.

The previous prime is 1400720887. The next prime is 1400720911. The reversal of 1400720900 is 90270041.

It can be written as a sum of positive squares in 3 ways, for example, as 9132484 + 1391588416 = 3022^2 + 37304^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7003505 + ... + 7003704.

Almost surely, 2^1400720900 is an apocalyptic number.

1400720900 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1400720900 is an abundant number, since it is smaller than the sum of its proper divisors (1638843670).

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

1400720900 is a wasteful number, since it uses less digits than its factorization.

1400720900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14007223 (or 14007216 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 23.

The square root of 1400720900 is about 37426.2060593911. The cubic root of 1400720900 is about 1118.8809240991.

Adding to 1400720900 its reverse (90270041), we get a palindrome (1490990941).

The spelling of 1400720900 in words is "one billion, four hundred million, seven hundred twenty thousand, nine hundred".