1307940 has 24 divisors (see below), whose sum is σ = 3662400. Its totient is φ = 348768.

The previous prime is 1307927. The next prime is 1307951. The reversal of 1307940 is 497031.

It is a self number, because there is not a number n which added to its sum of digits gives 1307940.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 10840 + ... + 10959.

It is an arithmetic number, because the mean of its divisors is an integer number (152600).

2^1307940 is an apocalyptic number.

1307940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1307940 is an abundant number, since it is smaller than the sum of its proper divisors (2354460).

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

1307940 is a wasteful number, since it uses less digits than its factorization.

1307940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21811 (or 21809 counting only the distinct ones).

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 1307940 is about 1143.6520449857. The cubic root of 1307940 is about 109.3610338630.

The spelling of 1307940 in words is "one million, three hundred seven thousand, nine hundred forty".