52436640 has 96 divisors (see below), whose sum is σ = 170916480. Its totient is φ = 13497344.

The previous prime is 52436627. The next prime is 52436641. The reversal of 52436640 is 4663425.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 52436598 and 52436607.

It is not an unprimeable number, because it can be changed into a prime (52436641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12037 + ... + 15803.

It is an arithmetic number, because the mean of its divisors is an integer number (1780380).

Almost surely, 2^52436640 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 52436640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85458240).

52436640 is an abundant number, since it is smaller than the sum of its proper divisors (118479840).

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

52436640 is a wasteful number, since it uses less digits than its factorization.

52436640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3814 (or 3806 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 30.

The square root of 52436640 is about 7241.3147977422. The cubic root of 52436640 is about 374.2929254038.

The spelling of 52436640 in words is "fifty-two million, four hundred thirty-six thousand, six hundred forty".