74212200 has 168 divisors, whose sum is σ = 259204950. Its totient is φ = 19751040.

The previous prime is 74212181. The next prime is 74212207. The reversal of 74212200 is 221247.

It can be written as a sum of positive squares in 3 ways, for example, as 64738116 + 9474084 = 8046^2 + 3078^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (74212207) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 145546 + ... + 146054.

Almost surely, 2^74212200 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 74212200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129602475).

74212200 is an abundant number, since it is smaller than the sum of its proper divisors (184992750).

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

74212200 is a wasteful number, since it uses less digits than its factorization.

74212200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543 (or 519 counting only the distinct ones).

The product of its (nonzero) digits is 224, while the sum is 18.

The square root of 74212200 is about 8614.6503121137. The cubic root of 74212200 is about 420.2345628538.

Adding to 74212200 its reverse (221247), we get a palindrome (74433447).

The spelling of 74212200 in words is "seventy-four million, two hundred twelve thousand, two hundred".