1400320340 has 24 divisors (see below), whose sum is σ = 2945044872. Its totient is φ = 559295360.

The previous prime is 1400320321. The next prime is 1400320343. The reversal of 1400320340 is 430230041.

1400320340 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 475065616 + 925254724 = 21796^2 + 30418^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1400320343) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38171 + ... + 65250.

It is an arithmetic number, because the mean of its divisors is an integer number (122710203).

Almost surely, 2^1400320340 is an apocalyptic number.

1400320340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1400320340 is an abundant number, since it is smaller than the sum of its proper divisors (1544724532).

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

1400320340 is a wasteful number, since it uses less digits than its factorization.

1400320340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104107 (or 104105 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 1400320340 is about 37420.8543462065. The cubic root of 1400320340 is about 1118.7742595782.

Adding to 1400320340 its reverse (430230041), we get a palindrome (1830550381).

It can be divided in two parts, 14003 and 20340, that added together give a palindrome (34343).

The spelling of 1400320340 in words is "one billion, four hundred million, three hundred twenty thousand, three hundred forty".