1300440 has 32 divisors (see below), whose sum is σ = 3901680. Its totient is φ = 346752.

The previous prime is 1300433. The next prime is 1300451. The reversal of 1300440 is 440031.

1300440 = T₁₂₃ + T₁₂₄ + ... + T₂₁₂.

It is a super-2 number, since 2×1300440² = 3382288387200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5299 + ... + 5538.

2^1300440 is an apocalyptic number.

1300440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1300440 is an abundant number, since it is smaller than the sum of its proper divisors (2601240).

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

1300440 is a wasteful number, since it uses less digits than its factorization.

1300440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10851 (or 10847 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 12.

The square root of 1300440 is about 1140.3683615394. The cubic root of 1300440 is about 109.1516000677.

Adding to 1300440 its reverse (440031), we get a palindrome (1740471).

The spelling of 1300440 in words is "one million, three hundred thousand, four hundred forty".