78267712 has 28 divisors (see below), whose sum is σ = 162068256. Its totient is φ = 37431680.

The previous prime is 78267701. The next prime is 78267713. The reversal of 78267712 is 21776287.

It is a super-2 number, since 2×78267712² = 12251669483429888, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78267713) 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, 25114 + ... + 28057.

It is an arithmetic number, because the mean of its divisors is an integer number (5788152).

Almost surely, 2^78267712 is an apocalyptic number.

It is an amenable number.

78267712 is an abundant number, since it is smaller than the sum of its proper divisors (83800544).

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

78267712 is a wasteful number, since it uses less digits than its factorization.

78267712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53206 (or 53196 counting only the distinct ones).

The product of its digits is 65856, while the sum is 40.

The square root of 78267712 is about 8846.9040912627. The cubic root of 78267712 is about 427.7541313566.

The spelling of 78267712 in words is "seventy-eight million, two hundred sixty-seven thousand, seven hundred twelve".