74528943 has 4 divisors (see below), whose sum is σ = 99371928. Its totient is φ = 49685960.

The previous prime is 74528941. The next prime is 74528957. The reversal of 74528943 is 34982547.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 74528943 - 2¹ = 74528941 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 74528895 and 74528904.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74528941) 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, 12421488 + ... + 12421493.

It is an arithmetic number, because the mean of its divisors is an integer number (24842982).

Almost surely, 2^74528943 is an apocalyptic number.

74528943 is a deficient number, since it is larger than the sum of its proper divisors (24842985).

74528943 is a wasteful number, since it uses less digits than its factorization.

74528943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24842984.

The product of its digits is 241920, while the sum is 42.

The square root of 74528943 is about 8633.0147109802. The cubic root of 74528943 is about 420.8315780558.

The spelling of 74528943 in words is "seventy-four million, five hundred twenty-eight thousand, nine hundred forty-three".