74781222 has 8 divisors (see below), whose sum is σ = 149562456. Its totient is φ = 24927072.

The previous prime is 74781221. The next prime is 74781229. The reversal of 74781222 is 22218747.

It is a sphenic number, since it is the product of 3 distinct primes.

74781222 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74781221) 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 3 ways as a sum of consecutive naturals, for example, 6231763 + ... + 6231774.

It is an arithmetic number, because the mean of its divisors is an integer number (18695307).

Almost surely, 2^74781222 is an apocalyptic number.

74781222 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

74781222 is a wasteful number, since it uses less digits than its factorization.

74781222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12463542.

The product of its digits is 12544, while the sum is 33.

The square root of 74781222 is about 8647.6136592704. The cubic root of 74781222 is about 421.3058788180.

Adding to 74781222 its reverse (22218747), we get a palindrome (96999969).

The spelling of 74781222 in words is "seventy-four million, seven hundred eighty-one thousand, two hundred twenty-two".