74494160 has 80 divisors (see below), whose sum is σ = 188987904. Its totient is φ = 27142656.

The previous prime is 74494139. The next prime is 74494163. The reversal of 74494160 is 6149447.

It is a Cunningham number, because it is equal to 8631²-1.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 74494160.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74494163) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85889 + ... + 86751.

Almost surely, 2^74494160 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 74494160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94493952).

74494160 is an abundant number, since it is smaller than the sum of its proper divisors (114493744).

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

74494160 is a wasteful number, since it uses less digits than its factorization.

74494160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972 (or 966 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 74494160 is about 8630.9999420693. Note that the first 4 decimals coincide. The cubic root of 74494160 is about 420.7660998583.

The spelling of 74494160 in words is "seventy-four million, four hundred ninety-four thousand, one hundred sixty".