78356030 has 8 divisors (see below), whose sum is σ = 141040872. Its totient is φ = 31342408.

The previous prime is 78356029. The next prime is 78356039. The reversal of 78356030 is 3065387.

It is a happy number.

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

It is a super-2 number, since 2×78356030² = 12279334874721800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78356039) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3917792 + ... + 3917811.

It is an arithmetic number, because the mean of its divisors is an integer number (17630109).

Almost surely, 2^78356030 is an apocalyptic number.

78356030 is a deficient number, since it is larger than the sum of its proper divisors (62684842).

78356030 is a wasteful number, since it uses less digits than its factorization.

78356030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7835610.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 78356030 is about 8851.8941475822. The cubic root of 78356030 is about 427.9149647641.

The spelling of 78356030 in words is "seventy-eight million, three hundred fifty-six thousand, thirty".