74514978 has 96 divisors (see below), whose sum is σ = 183980160. Its totient is φ = 22498560.

The previous prime is 74514943. The next prime is 74514989. The reversal of 74514978 is 87941547.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 239443 + ... + 239753.

It is an arithmetic number, because the mean of its divisors is an integer number (1916460).

Almost surely, 2^74514978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74514978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91990080).

74514978 is an abundant number, since it is smaller than the sum of its proper divisors (109465182).

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

74514978 is a wasteful number, since it uses less digits than its factorization.

74514978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 362 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 74514978 is about 8632.2058594545. The cubic root of 74514978 is about 420.8052917128.

The spelling of 74514978 in words is "seventy-four million, five hundred fourteen thousand, nine hundred seventy-eight".