52640360 has 16 divisors (see below), whose sum is σ = 118440900. Its totient is φ = 21056128.

The previous prime is 52640327. The next prime is 52640363. The reversal of 52640360 is 6304625.

It can be written as a sum of positive squares in 2 ways, for example, as 47914084 + 4726276 = 6922^2 + 2174^2 .

It is not an unprimeable number, because it can be changed into a prime (52640363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 657965 + ... + 658044.

Almost surely, 2^52640360 is an apocalyptic number.

It is an amenable number.

52640360 is an abundant number, since it is smaller than the sum of its proper divisors (65800540).

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

52640360 is a wasteful number, since it uses less digits than its factorization.

52640360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1316020 (or 1316016 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 26.

The square root of 52640360 is about 7255.3676681475. The cubic root of 52640360 is about 374.7770170655. Note that the first 3 decimals are identical.

Adding to 52640360 its reverse (6304625), we get a palindrome (58944985).

The spelling of 52640360 in words is "fifty-two million, six hundred forty thousand, three hundred sixty".