78129006 has 16 divisors (see below), whose sum is σ = 158014800. Its totient is φ = 25750208.

The previous prime is 78128977. The next prime is 78129011. The reversal of 78129006 is 60092187.

It is a super-2 number, since 2×78129006² = 12208283157096072, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 72621 + ... + 73688.

It is an arithmetic number, because the mean of its divisors is an integer number (9875925).

Almost surely, 2^78129006 is an apocalyptic number.

78129006 is an abundant number, since it is smaller than the sum of its proper divisors (79885794).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

78129006 is a wasteful number, since it uses less digits than its factorization.

78129006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 146403.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 78129006 is about 8839.0613755081. The cubic root of 78129006 is about 427.5012933855.

The spelling of 78129006 in words is "seventy-eight million, one hundred twenty-nine thousand, six".