74512090 has 8 divisors (see below), whose sum is σ = 134121780. Its totient is φ = 29804832.

The previous prime is 74512079. The next prime is 74512093. The reversal of 74512090 is 9021547.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 67420521 + 7091569 = 8211^2 + 2663^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (74512093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3725595 + ... + 3725614.

Almost surely, 2^74512090 is an apocalyptic number.

74512090 is a deficient number, since it is larger than the sum of its proper divisors (59609690).

74512090 is a wasteful number, since it uses less digits than its factorization.

74512090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7451216.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 74512090 is about 8632.0385773003. The cubic root of 74512090 is about 420.7998552157.

The spelling of 74512090 in words is "seventy-four million, five hundred twelve thousand, ninety".