5212840 has 40 divisors (see below), whose sum is σ = 12380490. Its totient is φ = 1975392.

The previous prime is 5212813. The next prime is 5212841. The reversal of 5212840 is 482125.

It can be written as a sum of positive squares in only one way, i.e., 4691556 + 521284 = 2166^2 + 722^2 .

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

It is not an unprimeable number, because it can be changed into a prime (5212841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 274351 + ... + 274369.

Almost surely, 2^5212840 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 5212840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6190245).

5212840 is an abundant number, since it is smaller than the sum of its proper divisors (7167650).

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

5212840 is an frugal number, since it uses more digits than its factorization.

5212840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87 (or 26 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 5212840 is about 2283.1644706416. The cubic root of 5212840 is about 173.3903001447.

Multiplying 5212840 by its product of nonzero digits (640), we get a square (3336217600 = 57760²).

Adding to 5212840 its reverse (482125), we get a palindrome (5694965).

The spelling of 5212840 in words is "five million, two hundred twelve thousand, eight hundred forty".