4297640 has 16 divisors (see below), whose sum is σ = 9669780. Its totient is φ = 1719040.

The previous prime is 4297637. The next prime is 4297649. The reversal of 4297640 is 467924.

It can be written as a sum of positive squares in 2 ways, for example, as 4251844 + 45796 = 2062^2 + 214^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4297597 and 4297606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4297649) 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, 53681 + ... + 53760.

Almost surely, 2^4297640 is an apocalyptic number.

4297640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4297640 is an abundant number, since it is smaller than the sum of its proper divisors (5372140).

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

4297640 is a wasteful number, since it uses less digits than its factorization.

4297640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107452 (or 107448 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 32.

The square root of 4297640 is about 2073.0750107027. The cubic root of 4297640 is about 162.5835783077.

The spelling of 4297640 in words is "four million, two hundred ninety-seven thousand, six hundred forty".