74053440 has 140 divisors (see below), whose sum is σ = 263513316. Its totient is φ = 19740672.

The previous prime is 74053423. The next prime is 74053453. The reversal of 74053440 is 4435047.

It can be written as a sum of positive squares in 2 ways, for example, as 38340864 + 35712576 = 6192^2 + 5976^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

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 19 ways as a sum of consecutive naturals, for example, 24492 + ... + 27348.

Almost surely, 2^74053440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74053440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131756658).

74053440 is an abundant number, since it is smaller than the sum of its proper divisors (189459876).

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

74053440 is a wasteful number, since it uses less digits than its factorization.

74053440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2886 (or 2867 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 27.

The square root of 74053440 is about 8605.4308433686. The cubic root of 74053440 is about 419.9346837204.

Adding to 74053440 its reverse (4435047), we get a palindrome (78488487).

The spelling of 74053440 in words is "seventy-four million, fifty-three thousand, four hundred forty".