75455240 has 64 divisors (see below), whose sum is σ = 200309760. Its totient is φ = 25032960.

The previous prime is 75455221. The next prime is 75455267. The reversal of 75455240 is 4255457.

It is a junction number, because it is equal to n+sod(n) for n = 75455197 and 75455206.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4334 + ... + 13026.

It is an arithmetic number, because the mean of its divisors is an integer number (3129840).

Almost surely, 2^75455240 is an apocalyptic number.

75455240 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 75455240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100154880).

75455240 is an abundant number, since it is smaller than the sum of its proper divisors (124854520).

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

75455240 is a wasteful number, since it uses less digits than its factorization.

75455240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8742 (or 8738 counting only the distinct ones).

The product of its (nonzero) digits is 28000, while the sum is 32.

The square root of 75455240 is about 8686.4975680650. The cubic root of 75455240 is about 422.5678660399.

The spelling of 75455240 in words is "seventy-five million, four hundred fifty-five thousand, two hundred forty".