4307640 has 32 divisors (see below), whose sum is σ = 12923280. Its totient is φ = 1148672.

The previous prime is 4307629. The next prime is 4307669. The reversal of 4307640 is 467034.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 4307640.

It is a congruent number.

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, 17829 + ... + 18068.

Almost surely, 2^4307640 is an apocalyptic number.

4307640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4307640 is an abundant number, since it is smaller than the sum of its proper divisors (8615640).

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

4307640 is a wasteful number, since it uses less digits than its factorization.

4307640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35911 (or 35907 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 4307640 is about 2075.4854853744. The cubic root of 4307640 is about 162.7095836177.

Subtracting from 4307640 its reverse (467034), we obtain a triangular number (3840606 = T₂₇₇₁).

The spelling of 4307640 in words is "four million, three hundred seven thousand, six hundred forty".