4235440 has 40 divisors (see below), whose sum is σ = 10744848. Its totient is φ = 1539840.

The previous prime is 4235419. The next prime is 4235443. The reversal of 4235440 is 445324.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (4235443) 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, 1527 + ... + 3286.

Almost surely, 2^4235440 is an apocalyptic number.

4235440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4235440 is an abundant number, since it is smaller than the sum of its proper divisors (6509408).

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

4235440 is a wasteful number, since it uses less digits than its factorization.

4235440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4837 (or 4831 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 4235440 is about 2058.0184644458. The cubic root of 4235440 is about 161.7954029445.

The spelling of 4235440 in words is "four million, two hundred thirty-five thousand, four hundred forty".