78516030 has 32 divisors (see below), whose sum is σ = 199524384. Its totient is φ = 19705856.

The previous prime is 78516007. The next prime is 78516071. The reversal of 78516030 is 3061587.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76467 + ... + 77486.

It is an arithmetic number, because the mean of its divisors is an integer number (6235137).

Almost surely, 2^78516030 is an apocalyptic number.

78516030 is an abundant number, since it is smaller than the sum of its proper divisors (121008354).

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

78516030 is a wasteful number, since it uses less digits than its factorization.

78516030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153980.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 78516030 is about 8860.9271523921. The cubic root of 78516030 is about 428.2060287075.

The spelling of 78516030 in words is "seventy-eight million, five hundred sixteen thousand, thirty".