5239640 has 32 divisors (see below), whose sum is σ = 13474080. Its totient is φ = 1796352.

The previous prime is 5239631. The next prime is 5239657. The reversal of 5239640 is 469325.

5239640 = T₁₆₁ + T₁₆₂ + ... + T₃₂₈.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9077 + ... + 9636.

It is an arithmetic number, because the mean of its divisors is an integer number (421065).

Almost surely, 2^5239640 is an apocalyptic number.

It is an amenable number.

5239640 is an abundant number, since it is smaller than the sum of its proper divisors (8234440).

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

5239640 is a wasteful number, since it uses less digits than its factorization.

5239640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18731 (or 18727 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 5239640 is about 2289.0259937362. The cubic root of 5239640 is about 173.6869343088.

The spelling of 5239640 in words is "five million, two hundred thirty-nine thousand, six hundred forty".