74000155 has 16 divisors (see below), whose sum is σ = 93703680. Its totient is φ = 55946592.

The previous prime is 74000153. The next prime is 74000161. The reversal of 74000155 is 55100047.

It is a cyclic number.

It is not a de Polignac number, because 74000155 - 2¹ = 74000153 is a prime.

It is not an unprimeable number, because it can be changed into a prime (74000153) 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 15 ways as a sum of consecutive naturals, for example, 55102 + ... + 56428.

It is an arithmetic number, because the mean of its divisors is an integer number (5856480).

Almost surely, 2^74000155 is an apocalyptic number.

74000155 is a deficient number, since it is larger than the sum of its proper divisors (19703525).

74000155 is a wasteful number, since it uses less digits than its factorization.

74000155 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1938.

The product of its (nonzero) digits is 700, while the sum is 22.

The square root of 74000155 is about 8602.3342762299. The cubic root of 74000155 is about 419.8339385077.

The spelling of 74000155 in words is "seventy-four million, one hundred fifty-five", and thus it is an aban number.