53436240 has 320 divisors, whose sum is σ = 217486080. Its totient is φ = 11888640.

The previous prime is 53436239. The next prime is 53436247. The reversal of 53436240 is 4263435.

53436240 is a `hidden beast` number, since 5 + 34 + 3 + 624 + 0 = 666.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53436247) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 308794 + ... + 308966.

It is an arithmetic number, because the mean of its divisors is an integer number (679644).

Almost surely, 2^53436240 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 53436240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108743040).

53436240 is an abundant number, since it is smaller than the sum of its proper divisors (164049840).

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

53436240 is a wasteful number, since it uses less digits than its factorization.

53436240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219 (or 207 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

The square root of 53436240 is about 7310.0095759171. The cubic root of 53436240 is about 376.6563532126.

Adding to 53436240 its reverse (4263435), we get a palindrome (57699675).

The spelling of 53436240 in words is "fifty-three million, four hundred thirty-six thousand, two hundred forty".