74740040 has 16 divisors (see below), whose sum is σ = 168165180. Its totient is φ = 29896000.

The previous prime is 74740031. The next prime is 74740069. The reversal of 74740040 is 4004747.

It can be written as a sum of positive squares in 2 ways, for example, as 68989636 + 5750404 = 8306^2 + 2398^2 .

It is a junction number, because it is equal to n+sod(n) for n = 74739991 and 74740009.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 934211 + ... + 934290.

Almost surely, 2^74740040 is an apocalyptic number.

It is an amenable number.

74740040 is an abundant number, since it is smaller than the sum of its proper divisors (93425140).

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

74740040 is a wasteful number, since it uses less digits than its factorization.

74740040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1868512 (or 1868508 counting only the distinct ones).

The product of its (nonzero) digits is 3136, while the sum is 26.

The square root of 74740040 is about 8645.2322120346. The cubic root of 74740040 is about 421.2285269369.

Adding to 74740040 its reverse (4004747), we get a palindrome (78744787).

The spelling of 74740040 in words is "seventy-four million, seven hundred forty thousand, forty".