75000078 has 12 divisors (see below), whose sum is σ = 162500208. Its totient is φ = 25000020.

The previous prime is 75000071. The next prime is 75000083. The reversal of 75000078 is 87000057.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75000071) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2083318 + ... + 2083353.

It is an arithmetic number, because the mean of its divisors is an integer number (13541684).

Almost surely, 2^75000078 is an apocalyptic number.

75000078 is an abundant number, since it is smaller than the sum of its proper divisors (87500130).

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

75000078 is a wasteful number, since it uses less digits than its factorization.

75000078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4166679 (or 4166676 counting only the distinct ones).

The product of its (nonzero) digits is 1960, while the sum is 27.

The square root of 75000078 is about 8660.2585411753. The cubic root of 75000078 is about 421.7164788458.

The spelling of 75000078 in words is "seventy-five million, seventy-eight", and thus it is an aban number and an uban number.