74745216 has 384 divisors, whose sum is σ = 285143040. Its totient is φ = 18247680.

The previous prime is 74745199. The next prime is 74745263. The reversal of 74745216 is 61254747.

It is a tau number, because it is divible by the number of its divisors (384).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2411121 + ... + 2411151.

It is an arithmetic number, because the mean of its divisors is an integer number (742560).

Almost surely, 2^74745216 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 74745216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142571520).

74745216 is an abundant number, since it is smaller than the sum of its proper divisors (210397824).

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

74745216 is a wasteful number, since it uses less digits than its factorization.

74745216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 79 counting only the distinct ones).

The product of its digits is 47040, while the sum is 36.

The square root of 74745216 is about 8645.5315626050. The cubic root of 74745216 is about 421.2382505447.

The spelling of 74745216 in words is "seventy-four million, seven hundred forty-five thousand, two hundred sixteen".