78858030 has 48 divisors (see below), whose sum is σ = 197885520. Its totient is φ = 20110464.

The previous prime is 78858029. The next prime is 78858049. The reversal of 78858030 is 3085887.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 78858030.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13386 + ... + 18354.

It is an arithmetic number, because the mean of its divisors is an integer number (4122615).

Almost surely, 2^78858030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78858030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98942760).

78858030 is an abundant number, since it is smaller than the sum of its proper divisors (119027490).

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

78858030 is a wasteful number, since it uses less digits than its factorization.

78858030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5025 (or 5002 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 39.

The square root of 78858030 is about 8880.2043895397. The cubic root of 78858030 is about 428.8268545628.

The spelling of 78858030 in words is "seventy-eight million, eight hundred fifty-eight thousand, thirty".