78950000 has 60 divisors (see below), whose sum is σ = 191315880. Its totient is φ = 31560000.

The previous prime is 78949999. The next prime is 78950009. The reversal of 78950000 is 5987.

It is a happy number.

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78950009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 49211 + ... + 50789.

It is an arithmetic number, because the mean of its divisors is an integer number (3188598).

Almost surely, 2^78950000 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78950000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (95657940).

78950000 is an abundant number, since it is smaller than the sum of its proper divisors (112365880).

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

78950000 is an equidigital number, since it uses as much as digits as its factorization.

78950000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1612 (or 1586 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 78950000 is about 8885.3812523718. The cubic root of 78950000 is about 428.9934995384.

Adding to 78950000 its reverse (5987), we get a palindrome (78955987).

The spelling of 78950000 in words is "seventy-eight million, nine hundred fifty thousand".