52830640 has 40 divisors (see below), whose sum is σ = 129299760. Its totient is φ = 20019456.

The previous prime is 52830629. The next prime is 52830643. The reversal of 52830640 is 4603825.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 52830599 and 52830608.

It is not an unprimeable number, because it can be changed into a prime (52830643) 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, 15859 + ... + 18898.

It is an arithmetic number, because the mean of its divisors is an integer number (3232494).

Almost surely, 2^52830640 is an apocalyptic number.

It is an amenable number.

52830640 is an abundant number, since it is smaller than the sum of its proper divisors (76469120).

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

52830640 is a wasteful number, since it uses less digits than its factorization.

52830640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34789 (or 34783 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 52830640 is about 7268.4688896631. The cubic root of 52830640 is about 375.2280449969.

The spelling of 52830640 in words is "fifty-two million, eight hundred thirty thousand, six hundred forty".