74043720 has 80 divisors (see below), whose sum is σ = 248880060. Its totient is φ = 19744128.

The previous prime is 74043701. The next prime is 74043727. The reversal of 74043720 is 2734047.

It can be written as a sum of positive squares in 2 ways, for example, as 69455556 + 4588164 = 8334^2 + 2142^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (74043727) 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 19 ways as a sum of consecutive naturals, for example, 8187 + ... + 14666.

Almost surely, 2^74043720 is an apocalyptic number.

It is an amenable number.

74043720 is an abundant number, since it is smaller than the sum of its proper divisors (174836340).

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

74043720 is a wasteful number, since it uses less digits than its factorization.

74043720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22876 (or 22863 counting only the distinct ones).

The product of its (nonzero) digits is 4704, while the sum is 27.

The square root of 74043720 is about 8604.8660651982. The cubic root of 74043720 is about 419.9163098554.

Adding to 74043720 its reverse (2734047), we get a palindrome (76777767).

The spelling of 74043720 in words is "seventy-four million, forty-three thousand, seven hundred twenty".