74212680 has 32 divisors (see below), whose sum is σ = 222638400. Its totient is φ = 19790016.

The previous prime is 74212673. The next prime is 74212681. The reversal of 74212680 is 8621247.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (74212681) 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 7 ways as a sum of consecutive naturals, for example, 309100 + ... + 309339.

It is an arithmetic number, because the mean of its divisors is an integer number (6957450).

Almost surely, 2^74212680 is an apocalyptic number.

It is an amenable number.

74212680 is an abundant number, since it is smaller than the sum of its proper divisors (148425720).

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

74212680 is a wasteful number, since it uses less digits than its factorization.

74212680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 618453 (or 618449 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 74212680 is about 8614.6781715860. The cubic root of 74212680 is about 420.2354688691.

It can be divided in two parts, 7421 and 2680, that added together give a palindrome (10101).

The spelling of 74212680 in words is "seventy-four million, two hundred twelve thousand, six hundred eighty".