74155148 has 6 divisors (see below), whose sum is σ = 129771516. Its totient is φ = 37077572.

The previous prime is 74155129. The next prime is 74155163. The reversal of 74155148 is 84155147.

It is a super-3 number, since 3×74155148³ (a number of 25 digits) contains 333 as substring.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 9269390 + ... + 9269397.

It is an arithmetic number, because the mean of its divisors is an integer number (21628586).

Almost surely, 2^74155148 is an apocalyptic number.

It is an amenable number.

74155148 is a deficient number, since it is larger than the sum of its proper divisors (55616368).

74155148 is a wasteful number, since it uses less digits than its factorization.

74155148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18538791 (or 18538789 counting only the distinct ones).

The product of its digits is 22400, while the sum is 35.

The square root of 74155148 is about 8611.3383396543. The cubic root of 74155148 is about 420.1268475514.

Subtracting 74155148 from its reverse (84155147), we obtain a palindrome (9999999).

The spelling of 74155148 in words is "seventy-four million, one hundred fifty-five thousand, one hundred forty-eight".