74004281 has 8 divisors (see below), whose sum is σ = 84385224. Its totient is φ = 64293120.

The previous prime is 74004269. The next prime is 74004283. The reversal of 74004281 is 18240047.

74004281 = T₁₆₇₈ + T₁₆₇₉ + ... + T₁₇₂₈.

It can be written as a sum of positive squares in 4 ways, for example, as 7728400 + 66275881 = 2780^2 + 8141^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 74004281 - 2¹⁴ = 73987897 is a prime.

It is a super-2 number, since 2×74004281² = 10953267212653922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 74004281.

It is not an unprimeable number, because it can be changed into a prime (74004283) 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, 167210 + ... + 167651.

It is an arithmetic number, because the mean of its divisors is an integer number (10548153).

Almost surely, 2^74004281 is an apocalyptic number.

It is an amenable number.

74004281 is a deficient number, since it is larger than the sum of its proper divisors (10380943).

74004281 is a wasteful number, since it uses less digits than its factorization.

74004281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334891.

The product of its (nonzero) digits is 1792, while the sum is 26.

The square root of 74004281 is about 8602.5740915147. The cubic root of 74004281 is about 419.8417412060.

The spelling of 74004281 in words is "seventy-four million, four thousand, two hundred eighty-one".