74540072 has 16 divisors (see below), whose sum is σ = 140475060. Its totient is φ = 37080064.

The previous prime is 74540071. The next prime is 74540077. The reversal of 74540072 is 27004547.

It can be written as a sum of positive squares in 2 ways, for example, as 71132356 + 3407716 = 8434^2 + 1846^2 .

It is not an unprimeable number, because it can be changed into a prime (74540071) 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, 22073 + ... + 25224.

Almost surely, 2^74540072 is an apocalyptic number.

It is an amenable number.

74540072 is a deficient number, since it is larger than the sum of its proper divisors (65934988).

74540072 is a wasteful number, since it uses less digits than its factorization.

74540072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47500 (or 47496 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 29.

The square root of 74540072 is about 8633.6592473875. The cubic root of 74540072 is about 420.8525238403.

The spelling of 74540072 in words is "seventy-four million, five hundred forty thousand, seventy-two".