1307492440 has 32 divisors (see below), whose sum is σ = 3114910080. Its totient is φ = 492232192.

The previous prime is 1307492437. The next prime is 1307492441. The reversal of 1307492440 is 442947031.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 1307492396 and 1307492405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1307492441) 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, 960712 + ... + 962071.

It is an arithmetic number, because the mean of its divisors is an integer number (97340940).

Almost surely, 2^1307492440 is an apocalyptic number.

1307492440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1307492440 is an abundant number, since it is smaller than the sum of its proper divisors (1807417640).

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

1307492440 is a wasteful number, since it uses less digits than its factorization.

1307492440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1922811 (or 1922807 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 1307492440 is about 36159.2649261569. The cubic root of 1307492440 is about 1093.4855846702.

The spelling of 1307492440 in words is "one billion, three hundred seven million, four hundred ninety-two thousand, four hundred forty".