74216090 has 32 divisors (see below), whose sum is σ = 151441920. Its totient is φ = 25959744.

The previous prime is 74216089. The next prime is 74216099. The reversal of 74216090 is 9061247.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74216099) 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, 12554 + ... + 17493.

It is an arithmetic number, because the mean of its divisors is an integer number (4732560).

Almost surely, 2^74216090 is an apocalyptic number.

74216090 is an abundant number, since it is smaller than the sum of its proper divisors (77225830).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74216090 is a wasteful number, since it uses less digits than its factorization.

74216090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30086.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 74216090 is about 8614.8760873271. The cubic root of 74216090 is about 420.2419052399.

The spelling of 74216090 in words is "seventy-four million, two hundred sixteen thousand, ninety".