74728398 has 8 divisors (see below), whose sum is σ = 149456808. Its totient is φ = 24909464.

The previous prime is 74728373. The next prime is 74728399. The reversal of 74728398 is 89382747.

It is a sphenic number, since it is the product of 3 distinct primes.

74728398 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74728399) 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 3 ways as a sum of consecutive naturals, for example, 6227361 + ... + 6227372.

It is an arithmetic number, because the mean of its divisors is an integer number (18682101).

Almost surely, 2^74728398 is an apocalyptic number.

74728398 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

74728398 is a wasteful number, since it uses less digits than its factorization.

74728398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12454738.

The product of its digits is 677376, while the sum is 48.

The square root of 74728398 is about 8644.5588667092. The cubic root of 74728398 is about 421.2066546929.

The spelling of 74728398 in words is "seventy-four million, seven hundred twenty-eight thousand, three hundred ninety-eight".