75340440 has 144 divisors (see below), whose sum is σ = 284899680. Its totient is φ = 17216640.

The previous prime is 75340427. The next prime is 75340451. The reversal of 75340440 is 4404357.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 15505 + ... + 19775.

It is an arithmetic number, because the mean of its divisors is an integer number (1978470).

Almost surely, 2^75340440 is an apocalyptic number.

75340440 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75340440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142449840).

75340440 is an abundant number, since it is smaller than the sum of its proper divisors (209559240).

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

75340440 is a wasteful number, since it uses less digits than its factorization.

75340440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4302 (or 4288 counting only the distinct ones).

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

The square root of 75340440 is about 8679.8870960399. The cubic root of 75340440 is about 422.3534545389.

Adding to 75340440 its reverse (4404357), we get a palindrome (79744797).

The spelling of 75340440 in words is "seventy-five million, three hundred forty thousand, four hundred forty".