74220406 has 12 divisors (see below), whose sum is σ = 120553812. Its totient is φ = 34255416.

The previous prime is 74220401. The next prime is 74220427. The reversal of 74220406 is 60402247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74220401) 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 5 ways as a sum of consecutive naturals, for example, 109456 + ... + 110131.

It is an arithmetic number, because the mean of its divisors is an integer number (10046151).

Almost surely, 2^74220406 is an apocalyptic number.

74220406 is a deficient number, since it is larger than the sum of its proper divisors (46333406).

74220406 is a wasteful number, since it uses less digits than its factorization.

74220406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219615 (or 219602 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 74220406 is about 8615.1265806139. The cubic root of 74220406 is about 420.2500514021.

The spelling of 74220406 in words is "seventy-four million, two hundred twenty thousand, four hundred six".