78395030 has 32 divisors (see below), whose sum is σ = 161580096. Its totient is φ = 26826624.

The previous prime is 78395029. The next prime is 78395039. The reversal of 78395030 is 3059387.

It is a super-2 number, since 2×78395030² = 12291561457401800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78395039) 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 15 ways as a sum of consecutive naturals, for example, 60752 + ... + 62028.

It is an arithmetic number, because the mean of its divisors is an integer number (5049378).

Almost surely, 2^78395030 is an apocalyptic number.

78395030 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

78395030 is an abundant number, since it is smaller than the sum of its proper divisors (83185066).

78395030 is a wasteful number, since it uses less digits than its factorization.

78395030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 78395030 is about 8854.0967918811. The cubic root of 78395030 is about 427.9859480931.

The spelling of 78395030 in words is "seventy-eight million, three hundred ninety-five thousand, thirty".