74216478 has 96 divisors (see below), whose sum is σ = 182020608. Its totient is φ = 20092800.

The previous prime is 74216473. The next prime is 74216491. The reversal of 74216478 is 87461247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74216473) 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 47 ways as a sum of consecutive naturals, for example, 566473 + ... + 566603.

It is an arithmetic number, because the mean of its divisors is an integer number (1896048).

Almost surely, 2^74216478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74216478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91010304).

74216478 is an abundant number, since it is smaller than the sum of its proper divisors (107804130).

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

74216478 is a wasteful number, since it uses less digits than its factorization.

74216478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 238 (or 231 counting only the distinct ones).

The product of its digits is 75264, while the sum is 39.

The square root of 74216478 is about 8614.8986064840. The cubic root of 74216478 is about 420.2426375770.

The spelling of 74216478 in words is "seventy-four million, two hundred sixteen thousand, four hundred seventy-eight".