74220532 has 12 divisors (see below), whose sum is σ = 129957156. Its totient is φ = 37089920.

The previous prime is 74220527. The next prime is 74220533. The reversal of 74220532 is 23502247.

It can be written as a sum of positive squares in 2 ways, for example, as 32307856 + 41912676 = 5684^2 + 6474^2 .

It is a junction number, because it is equal to n+sod(n) for n = 74220497 and 74220506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74220533) 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 3 ways as a sum of consecutive naturals, for example, 5628 + ... + 13420.

It is an arithmetic number, because the mean of its divisors is an integer number (10829763).

Almost surely, 2^74220532 is an apocalyptic number.

It is an amenable number.

74220532 is a deficient number, since it is larger than the sum of its proper divisors (55736624).

74220532 is a wasteful number, since it uses less digits than its factorization.

74220532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10178 (or 10176 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 25.

The square root of 74220532 is about 8615.1338933298. The cubic root of 74220532 is about 420.2502892139.

Adding to 74220532 its reverse (23502247), we get a palindrome (97722779).

The spelling of 74220532 in words is "seventy-four million, two hundred twenty thousand, five hundred thirty-two".