74881560 has 128 divisors (see below), whose sum is σ = 252564480. Its totient is φ = 17622528.

The previous prime is 74881553. The next prime is 74881601. The reversal of 74881560 is 6518847.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34837 + ... + 36923.

It is an arithmetic number, because the mean of its divisors is an integer number (1973160).

Almost surely, 2^74881560 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 74881560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (126282240).

74881560 is an abundant number, since it is smaller than the sum of its proper divisors (177682920).

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

74881560 is a wasteful number, since it uses less digits than its factorization.

74881560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2137 (or 2133 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 74881560 is about 8653.4131994260. The cubic root of 74881560 is about 421.4942242144.

The spelling of 74881560 in words is "seventy-four million, eight hundred eighty-one thousand, five hundred sixty".