74508720 has 240 divisors, whose sum is σ = 274482432. Its totient is φ = 16573440.

The previous prime is 74508719. The next prime is 74508751. The reversal of 74508720 is 2780547.

It is a tau number, because it is divible by the number of its divisors (240).

It is a Harshad number since it is a multiple of its sum of digits (33).

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, 446077 + ... + 446243.

Almost surely, 2^74508720 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 74508720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137241216).

74508720 is an abundant number, since it is smaller than the sum of its proper divisors (199973712).

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

74508720 is a wasteful number, since it uses less digits than its factorization.

74508720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220 (or 201 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 33.

The square root of 74508720 is about 8631.8433720730. The cubic root of 74508720 is about 420.7935112032.

The spelling of 74508720 in words is "seventy-four million, five hundred eight thousand, seven hundred twenty".