10307840 has 36 divisors (see below), whose sum is σ = 24693564. Its totient is φ = 4122624.

The previous prime is 10307821. The next prime is 10307849. The reversal of 10307840 is 4870301.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 5914624 + 4393216 = 2432^2 + 2096^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (10307849) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2747 + ... + 5306.

Almost surely, 2^10307840 is an apocalyptic number.

10307840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

10307840 is an abundant number, since it is smaller than the sum of its proper divisors (14385724).

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

10307840 is an frugal number, since it uses more digits than its factorization.

10307840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8074 (or 8060 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 10307840 is about 3210.5825016654. The cubic root of 10307840 is about 217.6319013206.

The spelling of 10307840 in words is "ten million, three hundred seven thousand, eight hundred forty".