74238213 has 16 divisors (see below), whose sum is σ = 115261056. Its totient is φ = 41620800.

The previous prime is 74238191. The next prime is 74238223. The reversal of 74238213 is 31283247.

It is not a de Polignac number, because 74238213 - 2⁹ = 74237701 is a prime.

It is a super-2 number, since 2×74238213² = 11022624538866738, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74238223) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32238 + ... + 34463.

It is an arithmetic number, because the mean of its divisors is an integer number (7203816).

Almost surely, 2^74238213 is an apocalyptic number.

It is an amenable number.

74238213 is a deficient number, since it is larger than the sum of its proper divisors (41022843).

74238213 is a wasteful number, since it uses less digits than its factorization.

74238213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66764.

The product of its digits is 8064, while the sum is 30.

The square root of 74238213 is about 8616.1599915508. The cubic root of 74238213 is about 420.2836575879.

The spelling of 74238213 in words is "seventy-four million, two hundred thirty-eight thousand, two hundred thirteen".