78240106 has 16 divisors (see below), whose sum is σ = 134305920. Its totient is φ = 33486480.

The previous prime is 78240079. The next prime is 78240109. The reversal of 78240106 is 60104287.

It is a super-3 number, since 3×78240106³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (78240109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8416 + ... + 15076.

It is an arithmetic number, because the mean of its divisors is an integer number (8394120).

Almost surely, 2^78240106 is an apocalyptic number.

78240106 is a deficient number, since it is larger than the sum of its proper divisors (56065814).

78240106 is a wasteful number, since it uses less digits than its factorization.

78240106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7509.

The product of its (nonzero) digits is 2688, while the sum is 28.

The square root of 78240106 is about 8845.3437468535. The cubic root of 78240106 is about 427.7038340336.

The spelling of 78240106 in words is "seventy-eight million, two hundred forty thousand, one hundred six".