74240528 has 20 divisors (see below), whose sum is σ = 144677868. Its totient is φ = 36904320.

The previous prime is 74240521. The next prime is 74240531. The reversal of 74240528 is 82504247.

It can be written as a sum of positive squares in 2 ways, for example, as 66129424 + 8111104 = 8132^2 + 2848^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 74240494 and 74240503.

It is not an unprimeable number, because it can be changed into a prime (74240521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10643 + ... + 16178.

Almost surely, 2^74240528 is an apocalyptic number.

It is an amenable number.

74240528 is a deficient number, since it is larger than the sum of its proper divisors (70437340).

74240528 is a wasteful number, since it uses less digits than its factorization.

74240528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27002 (or 26996 counting only the distinct ones).

The product of its (nonzero) digits is 17920, while the sum is 32.

The square root of 74240528 is about 8616.2943310915. The cubic root of 74240528 is about 420.2880261672.

The spelling of 74240528 in words is "seventy-four million, two hundred forty thousand, five hundred twenty-eight".