74252646 has 96 divisors (see below), whose sum is σ = 188183520. Its totient is φ = 21570624.

The previous prime is 74252641. The next prime is 74252669. The reversal of 74252646 is 64625247.

74252646 is a `hidden beast` number, since 7 + 4 + 2 + 5 + 2 + 646 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 74252646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74252641) 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 47 ways as a sum of consecutive naturals, for example, 253276 + ... + 253568.

It is an arithmetic number, because the mean of its divisors is an integer number (1960245).

Almost surely, 2^74252646 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74252646, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94091760).

74252646 is an abundant number, since it is smaller than the sum of its proper divisors (113930874).

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

74252646 is a wasteful number, since it uses less digits than its factorization.

74252646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 355 (or 330 counting only the distinct ones).

The product of its digits is 80640, while the sum is 36.

The square root of 74252646 is about 8616.9975049317. The cubic root of 74252646 is about 420.3108922636.

The spelling of 74252646 in words is "seventy-four million, two hundred fifty-two thousand, six hundred forty-six".