78324029 has 16 divisors (see below), whose sum is σ = 91469952. Its totient is φ = 65683968.

The previous prime is 78324019. The next prime is 78324031. The reversal of 78324029 is 92042387.

It is not a de Polignac number, because 78324029 - 2⁴ = 78324013 is a prime.

It is a super-2 number, since 2×78324029² = 12269307037585682, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 78324029.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78324019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65057 + ... + 66249.

It is an arithmetic number, because the mean of its divisors is an integer number (5716872).

Almost surely, 2^78324029 is an apocalyptic number.

It is an amenable number.

78324029 is a deficient number, since it is larger than the sum of its proper divisors (13145923).

78324029 is a wasteful number, since it uses less digits than its factorization.

78324029 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1396.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 78324029 is about 8850.0863837592. The cubic root of 78324029 is about 427.8567026180.

The spelling of 78324029 in words is "seventy-eight million, three hundred twenty-four thousand, twenty-nine".