53403680 has 96 divisors (see below), whose sum is σ = 144970560. Its totient is φ = 18385920.

The previous prime is 53403671. The next prime is 53403683. The reversal of 53403680 is 8630435.

It is not an unprimeable number, because it can be changed into a prime (53403683) 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, 32642 + ... + 34238.

It is an arithmetic number, because the mean of its divisors is an integer number (1510110).

Almost surely, 2^53403680 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 53403680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72485280).

53403680 is an abundant number, since it is smaller than the sum of its proper divisors (91566880).

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

53403680 is a wasteful number, since it uses less digits than its factorization.

53403680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1642 (or 1634 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 53403680 is about 7307.7821532938. The cubic root of 53403680 is about 376.5798357118.

The spelling of 53403680 in words is "fifty-three million, four hundred three thousand, six hundred eighty".