78765030 has 48 divisors (see below), whose sum is σ = 208160784. Its totient is φ = 20658240.

The previous prime is 78764993. The next prime is 78765031. The reversal of 78765030 is 3056787.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78765031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1684 + ... + 12663.

It is an arithmetic number, because the mean of its divisors is an integer number (4336683).

Almost surely, 2^78765030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78765030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104080392).

78765030 is an abundant number, since it is smaller than the sum of its proper divisors (129395754).

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

78765030 is a wasteful number, since it uses less digits than its factorization.

78765030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14421 (or 14418 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 78765030 is about 8874.9664788099. The cubic root of 78765030 is about 428.6582114735.

The spelling of 78765030 in words is "seventy-eight million, seven hundred sixty-five thousand, thirty".