74640254 has 16 divisors (see below), whose sum is σ = 123515280. Its totient is φ = 33608640.

The previous prime is 74640193. The next prime is 74640259. The reversal of 74640254 is 45204647.

It is a self number, because there is not a number n which added to its sum of digits gives 74640254.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74640259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33944 + ... + 36075.

It is an arithmetic number, because the mean of its divisors is an integer number (7719705).

Almost surely, 2^74640254 is an apocalyptic number.

74640254 is a deficient number, since it is larger than the sum of its proper divisors (48875026).

74640254 is a wasteful number, since it uses less digits than its factorization.

74640254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70075.

The product of its (nonzero) digits is 26880, while the sum is 32.

The square root of 74640254 is about 8639.4591265889. The cubic root of 74640254 is about 421.0409816365.

The spelling of 74640254 in words is "seventy-four million, six hundred forty thousand, two hundred fifty-four".