78028030 has 8 divisors (see below), whose sum is σ = 140450472. Its totient is φ = 31211208.

The previous prime is 78028019. The next prime is 78028033. The reversal of 78028030 is 3082087.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 78028030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78028033) 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, 3901392 + ... + 3901411.

It is an arithmetic number, because the mean of its divisors is an integer number (17556309).

Almost surely, 2^78028030 is an apocalyptic number.

78028030 is a deficient number, since it is larger than the sum of its proper divisors (62422442).

78028030 is a wasteful number, since it uses less digits than its factorization.

78028030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7802810.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 78028030 is about 8833.3476100514. The cubic root of 78028030 is about 427.3170426483.

The spelling of 78028030 in words is "seventy-eight million, twenty-eight thousand, thirty".