53342380 has 144 divisors (see below), whose sum is σ = 144789120. Its totient is φ = 16353792.

The previous prime is 53342369. The next prime is 53342381. The reversal of 53342380 is 8324335.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (53342381) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 675181 + ... + 675259.

It is an arithmetic number, because the mean of its divisors is an integer number (1005480).

Almost surely, 2^53342380 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 53342380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72394560).

53342380 is an abundant number, since it is smaller than the sum of its proper divisors (91446740).

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

53342380 is a wasteful number, since it uses less digits than its factorization.

53342380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 159 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 53342380 is about 7303.5867900642. The cubic root of 53342380 is about 376.4356934473.

The spelling of 53342380 in words is "fifty-three million, three hundred forty-two thousand, three hundred eighty".