74643282 has 96 divisors (see below), whose sum is σ = 197188992. Its totient is φ = 20715264.

The previous prime is 74643281. The next prime is 74643287. The reversal of 74643282 is 28234647.

74643282 is a `hidden beast` number, since 7 + 4 + 643 + 2 + 8 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (74643281) 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, 125578 + ... + 126170.

It is an arithmetic number, because the mean of its divisors is an integer number (2054052).

Almost surely, 2^74643282 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74643282, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98594496).

74643282 is an abundant number, since it is smaller than the sum of its proper divisors (122545710).

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

74643282 is a wasteful number, since it uses less digits than its factorization.

74643282 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 654 (or 642 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 74643282 is about 8639.6343672635. The cubic root of 74643282 is about 421.0466751455.

The spelling of 74643282 in words is "seventy-four million, six hundred forty-three thousand, two hundred eighty-two".