74420978 has 8 divisors (see below), whose sum is σ = 111767040. Its totient is φ = 37165300.

The previous prime is 74420971. The next prime is 74420981. The reversal of 74420978 is 87902447.

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 (74420971) 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, 20498 + ... + 23853.

It is an arithmetic number, because the mean of its divisors is an integer number (13970880).

Almost surely, 2^74420978 is an apocalyptic number.

74420978 is a deficient number, since it is larger than the sum of its proper divisors (37346062).

74420978 is a wasteful number, since it uses less digits than its factorization.

74420978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45192.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 74420978 is about 8626.7594147513. The cubic root of 74420978 is about 420.6282698432.

The spelling of 74420978 in words is "seventy-four million, four hundred twenty thousand, nine hundred seventy-eight".