74109440 has 40 divisors (see below), whose sum is σ = 177695100. Its totient is φ = 29642752.

The previous prime is 74109433. The next prime is 74109461. The reversal of 74109440 is 4490147.

It can be written as a sum of positive squares in 2 ways, for example, as 68425984 + 5683456 = 8272^2 + 2384^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×74109440² = 10984418194227200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11915 + ... + 17034.

Almost surely, 2^74109440 is an apocalyptic number.

It is an amenable number.

74109440 is an abundant number, since it is smaller than the sum of its proper divisors (103585660).

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

74109440 is an equidigital number, since it uses as much as digits as its factorization.

74109440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28972 (or 28956 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 74109440 is about 8608.6839876952. The cubic root of 74109440 is about 420.0405100759.

Adding to 74109440 its reverse (4490147), we get a palindrome (78599587).

The spelling of 74109440 in words is "seventy-four million, one hundred nine thousand, four hundred forty".