1406343740 has 48 divisors (see below), whose sum is σ = 3100349952. Its totient is φ = 534828096.

The previous prime is 1406343727. The next prime is 1406343749. The reversal of 1406343740 is 473436041.

It is a junction number, because it is equal to n+sod(n) for n = 1406343697 and 1406343706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1406343749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67667 + ... + 85973.

It is an arithmetic number, because the mean of its divisors is an integer number (64590624).

Almost surely, 2^1406343740 is an apocalyptic number.

1406343740 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 1406343740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1550174976).

1406343740 is an abundant number, since it is smaller than the sum of its proper divisors (1694006212).

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

1406343740 is a wasteful number, since it uses less digits than its factorization.

1406343740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18506 (or 18504 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 1406343740 is about 37501.2498458385. The cubic root of 1406343740 is about 1120.3760801236.

Adding to 1406343740 its reverse (473436041), we get a palindrome (1879779781).

The spelling of 1406343740 in words is "one billion, four hundred six million, three hundred forty-three thousand, seven hundred forty".