74709290 has 32 divisors (see below), whose sum is σ = 144132480. Its totient is φ = 27808704.

The previous prime is 74709269. The next prime is 74709301. The reversal of 74709290 is 9290747.

It is a happy number.

It is an alternating number because its digits alternate between odd and even.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4121 + ... + 12899.

It is an arithmetic number, because the mean of its divisors is an integer number (4504140).

Almost surely, 2^74709290 is an apocalyptic number.

74709290 is a deficient number, since it is larger than the sum of its proper divisors (69423190).

74709290 is a wasteful number, since it uses less digits than its factorization.

74709290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8846.

The product of its (nonzero) digits is 31752, while the sum is 38.

The square root of 74709290 is about 8643.4535921702. The cubic root of 74709290 is about 421.1707508819.

The spelling of 74709290 in words is "seventy-four million, seven hundred nine thousand, two hundred ninety".