4018340 has 24 divisors (see below), whose sum is σ = 8477952. Its totient is φ = 1599840.

The previous prime is 4018337. The next prime is 4018349. The reversal of 4018340 is 438104.

It is a super-2 number, since 2×4018340² = 32294112711200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (4018349) 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, 6317 + ... + 6923.

It is an arithmetic number, because the mean of its divisors is an integer number (353248).

Almost surely, 2^4018340 is an apocalyptic number.

It is an amenable number.

4018340 is an abundant number, since it is smaller than the sum of its proper divisors (4459612).

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

4018340 is a wasteful number, since it uses less digits than its factorization.

4018340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 947 (or 945 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 4018340 is about 2004.5797564577. The cubic root of 4018340 is about 158.9823431469.

The spelling of 4018340 in words is "four million, eighteen thousand, three hundred forty".