74218000 has 80 divisors (see below), whose sum is σ = 183845376. Its totient is φ = 28963200.

The previous prime is 74217953. The next prime is 74218007. The reversal of 74218000 is 81247.

It is a tau number, because it is divible by the number of its divisors (80).

It is not an unprimeable number, because it can be changed into a prime (74218007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85569 + ... + 86431.

Almost surely, 2^74218000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74218000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91922688).

74218000 is an abundant number, since it is smaller than the sum of its proper divisors (109627376).

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

74218000 is a wasteful number, since it uses less digits than its factorization.

74218000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 929 (or 913 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 74218000 is about 8614.9869413714. The cubic root of 74218000 is about 420.2455102765.

Adding to 74218000 its reverse (81247), we get a palindrome (74299247).

The spelling of 74218000 in words is "seventy-four million, two hundred eighteen thousand".