74338155 has 60 divisors (see below), whose sum is σ = 138416256. Its totient is φ = 38167200.

The previous prime is 74338153. The next prime is 74338169. The reversal of 74338155 is 55183347.

It is not a de Polignac number, because 74338155 - 2¹ = 74338153 is a prime.

It is a super-2 number, since 2×74338155² = 11052322577608050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (74338153) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 389110 + ... + 389300.

Almost surely, 2^74338155 is an apocalyptic number.

74338155 is a deficient number, since it is larger than the sum of its proper divisors (64078101).

74338155 is a wasteful number, since it uses less digits than its factorization.

74338155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270 (or 230 counting only the distinct ones).

The product of its digits is 50400, while the sum is 36.

The square root of 74338155 is about 8621.9577243222. The cubic root of 74338155 is about 420.4721730556.

The spelling of 74338155 in words is "seventy-four million, three hundred thirty-eight thousand, one hundred fifty-five".