74743720 has 32 divisors (see below), whose sum is σ = 177026400. Its totient is φ = 28323648.

The previous prime is 74743709. The next prime is 74743723. The reversal of 74743720 is 2734747.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (74743723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48414 + ... + 49933.

It is an arithmetic number, because the mean of its divisors is an integer number (5532075).

Almost surely, 2^74743720 is an apocalyptic number.

It is an amenable number.

74743720 is an abundant number, since it is smaller than the sum of its proper divisors (102282680).

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

74743720 is a wasteful number, since it uses less digits than its factorization.

74743720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98377 (or 98373 counting only the distinct ones).

The product of its (nonzero) digits is 32928, while the sum is 34.

The square root of 74743720 is about 8645.4450434897. The cubic root of 74743720 is about 421.2354402127.

The spelling of 74743720 in words is "seventy-four million, seven hundred forty-three thousand, seven hundred twenty".