78270012 has 36 divisors (see below), whose sum is σ = 206453520. Its totient is φ = 24955392.

The previous prime is 78270007. The next prime is 78270013. The reversal of 78270012 is 21007287.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×78270012² = 12252389556960288, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78270013) 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 11 ways as a sum of consecutive naturals, for example, 46437 + ... + 48092.

It is an arithmetic number, because the mean of its divisors is an integer number (5734820).

Almost surely, 2^78270012 is an apocalyptic number.

It is an amenable number.

78270012 is an abundant number, since it is smaller than the sum of its proper divisors (128183508).

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

78270012 is a wasteful number, since it uses less digits than its factorization.

78270012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94562 (or 94557 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 78270012 is about 8847.0340792833. The cubic root of 78270012 is about 427.7583213554.

Adding to 78270012 its reverse (21007287), we get a palindrome (99277299).

The spelling of 78270012 in words is "seventy-eight million, two hundred seventy thousand, twelve".