4027540 has 24 divisors (see below), whose sum is σ = 9227232. Its totient is φ = 1464480.

The previous prime is 4027519. The next prime is 4027547. The reversal of 4027540 is 457204.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4027547) 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, 8934 + ... + 9373.

It is an arithmetic number, because the mean of its divisors is an integer number (384468).

Almost surely, 2^4027540 is an apocalyptic number.

It is an amenable number.

4027540 is an abundant number, since it is smaller than the sum of its proper divisors (5199692).

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

4027540 is a wasteful number, since it uses less digits than its factorization.

4027540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18327 (or 18325 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 22.

The square root of 4027540 is about 2006.8731898154. The cubic root of 4027540 is about 159.1035808336.

The spelling of 4027540 in words is "four million, twenty-seven thousand, five hundred forty".