78303378 has 32 divisors (see below), whose sum is σ = 159494400. Its totient is φ = 25623936.

The previous prime is 78303373. The next prime is 78303391. The reversal of 78303378 is 87330387.

It is a super-2 number, since 2×78303378² = 12262838012421768, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78303373) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 110088 + ... + 110796.

It is an arithmetic number, because the mean of its divisors is an integer number (4984200).

Almost surely, 2^78303378 is an apocalyptic number.

78303378 is an abundant number, since it is smaller than the sum of its proper divisors (81191022).

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

78303378 is a wasteful number, since it uses less digits than its factorization.

78303378 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1026.

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

The square root of 78303378 is about 8848.9195950692. The cubic root of 78303378 is about 427.8190962557.

The spelling of 78303378 in words is "seventy-eight million, three hundred three thousand, three hundred seventy-eight".