1451406340 has 12 divisors (see below), whose sum is σ = 3047953356. Its totient is φ = 580562528.

The previous prime is 1451406287. The next prime is 1451406347. The reversal of 1451406340 is 436041541.

It can be written as a sum of positive squares in 2 ways, for example, as 534164544 + 917241796 = 23112^2 + 30286^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1451406299 and 1451406308.

It is not an unprimeable number, because it can be changed into a prime (1451406347) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 36285139 + ... + 36285178.

It is an arithmetic number, because the mean of its divisors is an integer number (253996113).

Almost surely, 2^1451406340 is an apocalyptic number.

1451406340 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1451406340 is an abundant number, since it is smaller than the sum of its proper divisors (1596547016).

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

1451406340 is a wasteful number, since it uses less digits than its factorization.

1451406340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72570326 (or 72570324 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 1451406340 is about 38097.3272028367. The cubic root of 1451406340 is about 1132.2170013135.

Adding to 1451406340 its reverse (436041541), we get a palindrome (1887447881).

The spelling of 1451406340 in words is "one billion, four hundred fifty-one million, four hundred six thousand, three hundred forty".