5427840 has 128 divisors (see below), whose sum is σ = 18947520. Its totient is φ = 1310720.

The previous prime is 5427833. The next prime is 5427857. The reversal of 5427840 is 487245.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×5427840² = 58922894131200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 5427798 and 5427807.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20992 + ... + 21248.

Almost surely, 2^5427840 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5427840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9473760).

5427840 is an abundant number, since it is smaller than the sum of its proper divisors (13519680).

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

5427840 is a wasteful number, since it uses less digits than its factorization.

5427840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 290 (or 278 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 30.

The square root of 5427840 is about 2329.7725210844. The cubic root of 5427840 is about 175.7420463585.

The spelling of 5427840 in words is "five million, four hundred twenty-seven thousand, eight hundred forty".