78118030 has 32 divisors (see below), whose sum is σ = 143951904. Its totient is φ = 30514176.

The previous prime is 78117983. The next prime is 78118031. The reversal of 78118030 is 3081187.

It is a happy number.

It is a super-2 number, since 2×78118030² = 12204853222161800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 78118030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78118031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82017 + ... + 82963.

It is an arithmetic number, because the mean of its divisors is an integer number (4498497).

Almost surely, 2^78118030 is an apocalyptic number.

78118030 is a deficient number, since it is larger than the sum of its proper divisors (65833874).

78118030 is a wasteful number, since it uses less digits than its factorization.

78118030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140.

The product of its (nonzero) digits is 1344, while the sum is 28.

The square root of 78118030 is about 8838.4404732962. The cubic root of 78118030 is about 427.4812731899.

The spelling of 78118030 in words is "seventy-eight million, one hundred eighteen thousand, thirty".