78948870 has 192 divisors, whose sum is σ = 257402880. Its totient is φ = 15079680.

The previous prime is 78948869. The next prime is 78948889. The reversal of 78948870 is 7884987.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 330211 + ... + 330449.

It is an arithmetic number, because the mean of its divisors is an integer number (1340640).

Almost surely, 2^78948870 is an apocalyptic number.

78948870 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 78948870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128701440).

78948870 is an abundant number, since it is smaller than the sum of its proper divisors (178454010).

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

78948870 is a wasteful number, since it uses less digits than its factorization.

78948870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 51.

The square root of 78948870 is about 8885.3176645520. The cubic root of 78948870 is about 428.9914528212.

The spelling of 78948870 in words is "seventy-eight million, nine hundred forty-eight thousand, eight hundred seventy".