74218252 has 6 divisors (see below), whose sum is σ = 129881948. Its totient is φ = 37109124.

The previous prime is 74218219. The next prime is 74218253. The reversal of 74218252 is 25281247.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (74218253) 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 as a sum of consecutive naturals, namely, 9277278 + ... + 9277285.

Almost surely, 2^74218252 is an apocalyptic number.

It is an amenable number.

74218252 is a deficient number, since it is larger than the sum of its proper divisors (55663696).

74218252 is a wasteful number, since it uses less digits than its factorization.

74218252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18554567 (or 18554565 counting only the distinct ones).

The product of its digits is 8960, while the sum is 31.

The square root of 74218252 is about 8615.0015670341. The cubic root of 74218252 is about 420.2459859102.

Adding to 74218252 its reverse (25281247), we get a palindrome (99499499).

The spelling of 74218252 in words is "seventy-four million, two hundred eighteen thousand, two hundred fifty-two".