74220630 has 32 divisors (see below), whose sum is σ = 194323968. Its totient is φ = 17992800.

The previous prime is 74220581. The next prime is 74220647. The reversal of 74220630 is 3602247.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 74220630.

It is a congruent number.

It is an unprimeable number.

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, 112126 + ... + 112785.

It is an arithmetic number, because the mean of its divisors is an integer number (6072624).

Almost surely, 2^74220630 is an apocalyptic number.

74220630 is an abundant number, since it is smaller than the sum of its proper divisors (120103338).

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

74220630 is a wasteful number, since it uses less digits than its factorization.

74220630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224932.

The product of its (nonzero) digits is 2016, while the sum is 24.

The square root of 74220630 is about 8615.1395809935. The cubic root of 74220630 is about 420.2504741785.

Adding to 74220630 its reverse (3602247), we get a palindrome (77822877).

The spelling of 74220630 in words is "seventy-four million, two hundred twenty thousand, six hundred thirty".