74106720 has 144 divisors (see below), whose sum is σ = 257926032. Its totient is φ = 19368960.

The previous prime is 74106719. The next prime is 74106727. The reversal of 74106720 is 2760147.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74106727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75835 + ... + 76805.

It is an arithmetic number, because the mean of its divisors is an integer number (1791153).

Almost surely, 2^74106720 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 74106720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128963016).

74106720 is an abundant number, since it is smaller than the sum of its proper divisors (183819312).

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

74106720 is a wasteful number, since it uses less digits than its factorization.

74106720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1045 (or 1034 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 27.

The square root of 74106720 is about 8608.5260062336. The cubic root of 74106720 is about 420.0353711707.

Adding to 74106720 its reverse (2760147), we get a palindrome (76866867).

The spelling of 74106720 in words is "seventy-four million, one hundred six thousand, seven hundred twenty".