75247340 has 60 divisors (see below), whose sum is σ = 184462656. Its totient is φ = 25782624.

The previous prime is 75247331. The next prime is 75247349. The reversal of 75247340 is 4374257.

It is an interprime number because it is at equal distance from previous prime (75247331) and next prime (75247349).

It is a junction number, because it is equal to n+sod(n) for n = 75247297 and 75247306.

It is not an unprimeable number, because it can be changed into a prime (75247349) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 47237 + ... + 48803.

Almost surely, 2^75247340 is an apocalyptic number.

75247340 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 75247340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (92231328).

75247340 is an abundant number, since it is smaller than the sum of its proper divisors (109215316).

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

75247340 is a wasteful number, since it uses less digits than its factorization.

75247340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1604 (or 1581 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 32.

The square root of 75247340 is about 8674.5224652427. The cubic root of 75247340 is about 422.1794120440.

The spelling of 75247340 in words is "seventy-five million, two hundred forty-seven thousand, three hundred forty".