74075520 has 128 divisors (see below), whose sum is σ = 242131680. Its totient is φ = 19251200.

The previous prime is 74075497. The next prime is 74075537. The reversal of 74075520 is 2557047.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a plaindrome in base 13.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 78250 + ... + 79190.

Almost surely, 2^74075520 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 74075520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121065840).

74075520 is an abundant number, since it is smaller than the sum of its proper divisors (168056160).

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

74075520 is a wasteful number, since it uses less digits than its factorization.

74075520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1004 (or 992 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 30.

The square root of 74075520 is about 8606.7136585342. The cubic root of 74075520 is about 419.9764159093.

The spelling of 74075520 in words is "seventy-four million, seventy-five thousand, five hundred twenty".