74222538 has 16 divisors (see below), whose sum is σ = 159864096. Its totient is φ = 22837680.

The previous prime is 74222537. The next prime is 74222549. The reversal of 74222538 is 83522247.

It is a super-2 number, since 2×74222538² = 11017970294322888, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 74222499 and 74222508.

It is not an unprimeable number, because it can be changed into a prime (74222537) 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 7 ways as a sum of consecutive naturals, for example, 475708 + ... + 475863.

It is an arithmetic number, because the mean of its divisors is an integer number (9991506).

Almost surely, 2^74222538 is an apocalyptic number.

74222538 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

74222538 is an abundant number, since it is smaller than the sum of its proper divisors (85641558).

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

74222538 is a wasteful number, since it uses less digits than its factorization.

74222538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 951589.

The product of its digits is 26880, while the sum is 33.

The square root of 74222538 is about 8615.2503155741. The cubic root of 74222538 is about 420.2540752933.

The spelling of 74222538 in words is "seventy-four million, two hundred twenty-two thousand, five hundred thirty-eight".