4288540 has 24 divisors (see below), whose sum is σ = 9297792. Its totient is φ = 1659840.

The previous prime is 4288517. The next prime is 4288541. The reversal of 4288540 is 458824.

4288540 = T₂₅₆ + T₂₅₇ + ... + T₃₄₈.

4288540 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4288541) 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, 2839 + ... + 4078.

It is an arithmetic number, because the mean of its divisors is an integer number (387408).

Almost surely, 2^4288540 is an apocalyptic number.

It is an amenable number.

4288540 is an abundant number, since it is smaller than the sum of its proper divisors (5009252).

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

4288540 is a wasteful number, since it uses less digits than its factorization.

4288540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6957 (or 6955 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 31.

The square root of 4288540 is about 2070.8790404077. The cubic root of 4288540 is about 162.4687434952.

The spelling of 4288540 in words is "four million, two hundred eighty-eight thousand, five hundred forty".