4378540 has 24 divisors (see below), whose sum is σ = 9324000. Its totient is φ = 1726848.

The previous prime is 4378523. The next prime is 4378541. The reversal of 4378540 is 458734.

4378540 = 208² + 209² + ... + 280².

It is a super-2 number, since 2×4378540² = 38343225063200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (4378541) 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, 40 + ... + 2959.

It is an arithmetic number, because the mean of its divisors is an integer number (388500).

Almost surely, 2^4378540 is an apocalyptic number.

It is an amenable number.

4378540 is an abundant number, since it is smaller than the sum of its proper divisors (4945460).

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

4378540 is a wasteful number, since it uses less digits than its factorization.

4378540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3081 (or 3079 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 4378540 is about 2092.4961170812. The cubic root of 4378540 is about 163.5974162826.

The spelling of 4378540 in words is "four million, three hundred seventy-eight thousand, five hundred forty".