45000078 has 8 divisors (see below), whose sum is σ = 90000168. Its totient is φ = 15000024.

The previous prime is 45000077. The next prime is 45000097. The reversal of 45000078 is 87000054.

It is a sphenic number, since it is the product of 3 distinct primes.

45000078 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (45000077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3750001 + ... + 3750012.

It is an arithmetic number, because the mean of its divisors is an integer number (11250021).

Almost surely, 2^45000078 is an apocalyptic number.

45000078 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

45000078 is a wasteful number, since it uses less digits than its factorization.

45000078 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7500018.

The product of its (nonzero) digits is 1120, while the sum is 24.

The square root of 45000078 is about 6708.2097462736. The cubic root of 45000078 is about 355.6895359583.

Subtracting from 45000078 its sum of digits (24), we obtain a palindrome (45000054).

The spelling of 45000078 in words is "forty-five million, seventy-eight", and thus it is an aban number and an uban number.