74388445 has 8 divisors (see below), whose sum is σ = 89475840. Its totient is φ = 59370960.

The previous prime is 74388403. The next prime is 74388449. The reversal of 74388445 is 54488347.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 74388445 - 2⁷ = 74388317 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74388449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15105 + ... + 19414.

It is an arithmetic number, because the mean of its divisors is an integer number (11184480).

Almost surely, 2^74388445 is an apocalyptic number.

It is an amenable number.

74388445 is a deficient number, since it is larger than the sum of its proper divisors (15087395).

74388445 is a wasteful number, since it uses less digits than its factorization.

74388445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34955.

The product of its digits is 430080, while the sum is 43.

The square root of 74388445 is about 8624.8736222625. The cubic root of 74388445 is about 420.5669686063.

The spelling of 74388445 in words is "seventy-four million, three hundred eighty-eight thousand, four hundred forty-five".