74733891 has 8 divisors (see below), whose sum is σ = 99800400. Its totient is φ = 49744992.

The previous prime is 74733881. The next prime is 74733929. The reversal of 74733891 is 19833747.

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

It is not a de Polignac number, because 74733891 - 2¹⁴ = 74717507 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (74733811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17116 + ... + 21033.

It is an arithmetic number, because the mean of its divisors is an integer number (12475050).

Almost surely, 2^74733891 is an apocalyptic number.

74733891 is the 5468-th centered pentagonal number.

74733891 is a deficient number, since it is larger than the sum of its proper divisors (25066509).

74733891 is a wasteful number, since it uses less digits than its factorization.

74733891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38805.

The product of its digits is 127008, while the sum is 42.

The square root of 74733891 is about 8644.8765751745. The cubic root of 74733891 is about 421.2169748725.

The spelling of 74733891 in words is "seventy-four million, seven hundred thirty-three thousand, eight hundred ninety-one".