74280040 has 16 divisors (see below), whose sum is σ = 167130180. Its totient is φ = 29712000.

The previous prime is 74280007. The next prime is 74280067. The reversal of 74280040 is 4008247.

It can be written as a sum of positive squares in 2 ways, for example, as 73307844 + 972196 = 8562^2 + 986^2 .

It is a junction number, because it is equal to n+sod(n) for n = 74279987 and 74280014.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 928461 + ... + 928540.

Almost surely, 2^74280040 is an apocalyptic number.

It is an amenable number.

74280040 is an abundant number, since it is smaller than the sum of its proper divisors (92850140).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

74280040 is a wasteful number, since it uses less digits than its factorization.

74280040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1857012 (or 1857008 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 74280040 is about 8618.5868911324. The cubic root of 74280040 is about 420.3625742868.

Adding to 74280040 its reverse (4008247), we get a palindrome (78288287).

The spelling of 74280040 in words is "seventy-four million, two hundred eighty thousand, forty".