53818240 has 128 divisors (see below), whose sum is σ = 151139520. Its totient is φ = 17940480.

The previous prime is 53818231. The next prime is 53818249. The reversal of 53818240 is 4281835.

It is an interprime number because it is at equal distance from previous prime (53818231) and next prime (53818249).

It is a tau number, because it is divible by the number of its divisors (128).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (53818249) 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 15 ways as a sum of consecutive naturals, for example, 183534 + ... + 183826.

Almost surely, 2^53818240 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 53818240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75569760).

53818240 is an abundant number, since it is smaller than the sum of its proper divisors (97321280).

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

53818240 is a wasteful number, since it uses less digits than its factorization.

53818240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 360 (or 348 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 31.

The square root of 53818240 is about 7336.0916024815. The cubic root of 53818240 is about 377.5517581767.

The spelling of 53818240 in words is "fifty-three million, eight hundred eighteen thousand, two hundred forty".