74238671 has 4 divisors (see below), whose sum is σ = 79949352. Its totient is φ = 68527992.

The previous prime is 74238667. The next prime is 74238673. The reversal of 74238671 is 17683247.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 17683247 = 17 ⋅1040191.

It is not a de Polignac number, because 74238671 - 2² = 74238667 is a prime.

It is a super-2 number, since 2×74238671² = 11022760543692482, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74238673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2855321 + ... + 2855346.

It is an arithmetic number, because the mean of its divisors is an integer number (19987338).

Almost surely, 2^74238671 is an apocalyptic number.

74238671 is a deficient number, since it is larger than the sum of its proper divisors (5710681).

74238671 is a wasteful number, since it uses less digits than its factorization.

74238671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5710680.

The product of its digits is 56448, while the sum is 38.

The square root of 74238671 is about 8616.1865694749. The cubic root of 74238671 is about 420.2845218756.

The spelling of 74238671 in words is "seventy-four million, two hundred thirty-eight thousand, six hundred seventy-one".