78230120 has 32 divisors (see below), whose sum is σ = 179343720. Its totient is φ = 30700800.

The previous prime is 78230101. The next prime is 78230129. The reversal of 78230120 is 2103287.

It can be written as a sum of positive squares in 4 ways, for example, as 47914084 + 30316036 = 6922^2 + 5506^2 .

It is a super-2 number, since 2×78230120² = 12239903350428800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78230129) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16331 + ... + 20570.

Almost surely, 2^78230120 is an apocalyptic number.

It is an amenable number.

78230120 is an abundant number, since it is smaller than the sum of its proper divisors (101113600).

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

78230120 is a wasteful number, since it uses less digits than its factorization.

78230120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36965 (or 36961 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 78230120 is about 8844.7792510610. The cubic root of 78230120 is about 427.6856369204.

The spelling of 78230120 in words is "seventy-eight million, two hundred thirty thousand, one hundred twenty".