74284749 has 32 divisors (see below), whose sum is σ = 137210880. Its totient is φ = 38588400.

The previous prime is 74284739. The next prime is 74284759. The reversal of 74284749 is 94748247.

It is an interprime number because it is at equal distance from previous prime (74284739) and next prime (74284759).

It is not a de Polignac number, because 74284749 - 2⁷ = 74284621 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74284739) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15787 + ... + 19944.

It is an arithmetic number, because the mean of its divisors is an integer number (4287840).

Almost surely, 2^74284749 is an apocalyptic number.

It is an amenable number.

74284749 is a deficient number, since it is larger than the sum of its proper divisors (62926131).

74284749 is a wasteful number, since it uses less digits than its factorization.

74284749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35758 (or 35752 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 74284749 is about 8618.8600754392. The cubic root of 74284749 is about 420.3714570927.

It can be divided in two parts, 742 and 84749, that added together give a triangular number (85491 = T₄₁₃).

The spelling of 74284749 in words is "seventy-four million, two hundred eighty-four thousand, seven hundred forty-nine".