52418730 has 144 divisors (see below), whose sum is σ = 159218784. Its totient is φ = 11007360.

The previous prime is 52418711. The next prime is 52418731. The reversal of 52418730 is 3781425.

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

It is not an unprimeable number, because it can be changed into a prime (52418731) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 248325 + ... + 248535.

It is an arithmetic number, because the mean of its divisors is an integer number (1105686).

Almost surely, 2^52418730 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 52418730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79609392).

52418730 is an abundant number, since it is smaller than the sum of its proper divisors (106800054).

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

52418730 is a wasteful number, since it uses less digits than its factorization.

52418730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 261 (or 241 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 52418730 is about 7240.0780382535. The cubic root of 52418730 is about 374.2503066696.

The spelling of 52418730 in words is "fifty-two million, four hundred eighteen thousand, seven hundred thirty".