74222000 has 160 divisors (see below), whose sum is σ = 198469440. Its totient is φ = 26726400.

The previous prime is 74221957. The next prime is 74222009. The reversal of 74222000 is 22247.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 74222000.

It is not an unprimeable number, because it can be changed into a prime (74222009) 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 31 ways as a sum of consecutive naturals, for example, 1257971 + ... + 1258029.

It is an arithmetic number, because the mean of its divisors is an integer number (1240434).

Almost surely, 2^74222000 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 74222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99234720).

74222000 is an abundant number, since it is smaller than the sum of its proper divisors (124247440).

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

74222000 is a wasteful number, since it uses less digits than its factorization.

74222000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 17.

The square root of 74222000 is about 8615.2190918165. The cubic root of 74222000 is about 420.2530598909.

Adding to 74222000 its reverse (22247), we get a palindrome (74244247).

The spelling of 74222000 in words is "seventy-four million, two hundred twenty-two thousand".