78888945 has 8 divisors (see below), whose sum is σ = 126222336. Its totient is φ = 42074096.

The previous prime is 78888941. The next prime is 78888967. The reversal of 78888945 is 54988887.

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

It is a cyclic number.

It is not a de Polignac number, because 78888945 - 2² = 78888941 is a prime.

It is not an unprimeable number, because it can be changed into a prime (78888941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2629617 + ... + 2629646.

It is an arithmetic number, because the mean of its divisors is an integer number (15777792).

Almost surely, 2^78888945 is an apocalyptic number.

It is an amenable number.

78888945 is a deficient number, since it is larger than the sum of its proper divisors (47333391).

78888945 is a wasteful number, since it uses less digits than its factorization.

78888945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5259271.

The product of its digits is 5160960, while the sum is 57.

The square root of 78888945 is about 8881.9448883676. The cubic root of 78888945 is about 428.8828854247.

The spelling of 78888945 in words is "seventy-eight million, eight hundred eighty-eight thousand, nine hundred forty-five".