194730624 has 192 divisors, whose sum is σ = 621204480. Its totient is φ = 58544640.

The previous prime is 194730619. The next prime is 194730629. The reversal of 194730624 is 426037491.

It is an interprime number because it is at equal distance from previous prime (194730619) and next prime (194730629).

It is a tau number, because it is divible by the number of its divisors (192).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is not an unprimeable number, because it can be changed into a prime (194730629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1533249 + ... + 1533375.

It is an arithmetic number, because the mean of its divisors is an integer number (3235440).

Almost surely, 2^194730624 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 194730624, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (310602240).

194730624 is an abundant number, since it is smaller than the sum of its proper divisors (426473856).

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

194730624 is a wasteful number, since it uses less digits than its factorization.

194730624 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180 (or 143 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 194730624 is about 13954.5915024411. The cubic root of 194730624 is about 579.6218541856.

The spelling of 194730624 in words is "one hundred ninety-four million, seven hundred thirty thousand, six hundred twenty-four".