78455788 has 24 divisors (see below), whose sum is σ = 149511600. Its totient is φ = 35880768.

The previous prime is 78455777. The next prime is 78455789. The reversal of 78455788 is 88755487.

It is a happy number.

It is a hoax number, since the sum of its digits (52) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (78455789) 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, 15595 + ... + 20002.

It is an arithmetic number, because the mean of its divisors is an integer number (6229650).

Almost surely, 2^78455788 is an apocalyptic number.

It is an amenable number.

78455788 is a deficient number, since it is larger than the sum of its proper divisors (71055812).

78455788 is a wasteful number, since it uses less digits than its factorization.

78455788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35649 (or 35647 counting only the distinct ones).

The product of its digits is 2508800, while the sum is 52.

The square root of 78455788 is about 8857.5271944262. The cubic root of 78455788 is about 428.0964859479.

The spelling of 78455788 in words is "seventy-eight million, four hundred fifty-five thousand, seven hundred eighty-eight".