52070840 has 64 divisors (see below), whose sum is σ = 121642560. Its totient is φ = 20044800.

The previous prime is 52070833. The next prime is 52070867. The reversal of 52070840 is 4807025.

It is a super-2 number, since 2×52070840² = 5422744756611200, which contains 22 as substring.

It is a congruent number.

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, 223364 + ... + 223596.

It is an arithmetic number, because the mean of its divisors is an integer number (1900665).

Almost surely, 2^52070840 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 52070840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (60821280).

52070840 is an abundant number, since it is smaller than the sum of its proper divisors (69571720).

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

52070840 is a wasteful number, since it uses less digits than its factorization.

52070840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 432 (or 428 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 26.

The square root of 52070840 is about 7216.0127494344. The cubic root of 52070840 is about 373.4205330608.

Adding to 52070840 its reverse (4807025), we get a palindrome (56877865).

The spelling of 52070840 in words is "fifty-two million, seventy thousand, eight hundred forty".