1400224340 has 12 divisors (see below), whose sum is σ = 2940471156. Its totient is φ = 560089728.

The previous prime is 1400224321. The next prime is 1400224349. The reversal of 1400224340 is 434220041.

It can be written as a sum of positive squares in 2 ways, for example, as 709796164 + 690428176 = 26642^2 + 26276^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 70011217 = 1400224340 / (1 + 4 + 0 + 0 + 2 + 2 + 4 + 3 + 4 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400224349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35005589 + ... + 35005628.

It is an arithmetic number, because the mean of its divisors is an integer number (245039263).

Almost surely, 2^1400224340 is an apocalyptic number.

1400224340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1400224340 is an abundant number, since it is smaller than the sum of its proper divisors (1540246816).

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

1400224340 is a wasteful number, since it uses less digits than its factorization.

1400224340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70011226 (or 70011224 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1400224340 is about 37419.5716170028. The cubic root of 1400224340 is about 1118.7486928607.

Adding to 1400224340 its reverse (434220041), we get a palindrome (1834444381).

The spelling of 1400224340 in words is "one billion, four hundred million, two hundred twenty-four thousand, three hundred forty".