74008021 has 8 divisors (see below), whose sum is σ = 82486080. Its totient is φ = 65988288.

The previous prime is 74008003. The next prime is 74008027. The reversal of 74008021 is 12080047.

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

It is not a de Polignac number, because 74008021 - 2¹³ = 73999829 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 74007983 and 74008001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74008027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114241 + ... + 114886.

It is an arithmetic number, because the mean of its divisors is an integer number (10310760).

Almost surely, 2^74008021 is an apocalyptic number.

It is an amenable number.

74008021 is a deficient number, since it is larger than the sum of its proper divisors (8478059).

74008021 is a wasteful number, since it uses less digits than its factorization.

74008021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 229163.

The product of its (nonzero) digits is 448, while the sum is 22.

The square root of 74008021 is about 8602.7914655651. The cubic root of 74008021 is about 419.8488136872.

Adding to 74008021 its reverse (12080047), we get a palindrome (86088068).

The spelling of 74008021 in words is "seventy-four million, eight thousand, twenty-one".