78303387 has 8 divisors (see below), whose sum is σ = 106832704. Its totient is φ = 50988168.

The previous prime is 78303373. The next prime is 78303391. The reversal of 78303387 is 78330387.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 78303387 - 2⁷ = 78303259 is a prime.

It is a super-2 number, since 2×78303387² = 12262840831343538, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78303307) 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 7 ways as a sum of consecutive naturals, for example, 303373 + ... + 303630.

It is an arithmetic number, because the mean of its divisors is an integer number (13354088).

Almost surely, 2^78303387 is an apocalyptic number.

78303387 is a deficient number, since it is larger than the sum of its proper divisors (28529317).

78303387 is a wasteful number, since it uses less digits than its factorization.

78303387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 607049.

The product of its (nonzero) digits is 84672, while the sum is 39.

The square root of 78303387 is about 8848.9201036059. The cubic root of 78303387 is about 427.8191126466.

Subtracting 78303387 from its reverse (78330387), we obtain a cube (27000 = 30³).

The spelling of 78303387 in words is "seventy-eight million, three hundred three thousand, three hundred eighty-seven".