1400647680 has 416 divisors, whose sum is σ = 5307768000. Its totient is φ = 349175808.

The previous prime is 1400647679. The next prime is 1400647709. The reversal of 1400647680 is 867460041.

1400647680 is a `hidden beast` number, since 1 + 4 + 0 + 0 + 647 + 6 + 8 + 0 = 666.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 9400246 + ... + 9400394.

Almost surely, 2^1400647680 is an apocalyptic number.

1400647680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1400647680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2653884000).

1400647680 is an abundant number, since it is smaller than the sum of its proper divisors (3907120320).

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

1400647680 is a wasteful number, since it uses less digits than its factorization.

1400647680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 176 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

The square root of 1400647680 is about 37425.2278550178. The cubic root of 1400647680 is about 1118.8614279742.

The spelling of 1400647680 in words is "one billion, four hundred million, six hundred forty-seven thousand, six hundred eighty".