74155072 has 14 divisors (see below), whose sum is σ = 147151598. Its totient is φ = 37077504.

The previous prime is 74155061. The next prime is 74155073. The reversal of 74155072 is 27055147.

It can be written as a sum of positive squares in only one way, i.e., 46022656 + 28132416 = 6784^2 + 5304^2 .

It is a super-3 number, since 3×74155072³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (74155073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579273 + ... + 579400.

Almost surely, 2^74155072 is an apocalyptic number.

It is an amenable number.

74155072 is a deficient number, since it is larger than the sum of its proper divisors (72996526).

74155072 is a wasteful number, since it uses less digits than its factorization.

74155072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1158685 (or 1158675 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 74155072 is about 8611.3339268664. Note that the first 3 decimals coincide. The cubic root of 74155072 is about 420.1267040250.

The spelling of 74155072 in words is "seventy-four million, one hundred fifty-five thousand, seventy-two".