78030001 has 12 divisors (see below), whose sum is σ = 91710948. Its totient is φ = 66189312.

The previous prime is 78029989. The next prime is 78030023. The reversal of 78030001 is 10003087.

It can be written as a sum of positive squares in 2 ways, for example, as 27050401 + 50979600 = 5201^2 + 7140^2 .

It is not a de Polignac number, because 78030001 - 2⁵ = 78029969 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78030061) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3456 + ... + 12961.

It is an arithmetic number, because the mean of its divisors is an integer number (7642579).

Almost surely, 2^78030001 is an apocalyptic number.

It is an amenable number.

78030001 is a deficient number, since it is larger than the sum of its proper divisors (13680947).

78030001 is a wasteful number, since it uses less digits than its factorization.

78030001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16528 (or 16521 counting only the distinct ones).

The product of its (nonzero) digits is 168, while the sum is 19.

The square root of 78030001 is about 8833.4591752042. The cubic root of 78030001 is about 427.3206406494.

Adding to 78030001 its reverse (10003087), we get a palindrome (88033088).

The spelling of 78030001 in words is "seventy-eight million, thirty thousand, one".