78253106 has 8 divisors (see below), whose sum is σ = 117417600. Its totient is φ = 39113908.

The previous prime is 78253103. The next prime is 78253111. The reversal of 78253106 is 60135287.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×78253106² = 12247097197294472, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (78253103) 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, 7175 + ... + 14421.

It is an arithmetic number, because the mean of its divisors is an integer number (14677200).

Almost surely, 2^78253106 is an apocalyptic number.

78253106 is a deficient number, since it is larger than the sum of its proper divisors (39164494).

78253106 is a wasteful number, since it uses less digits than its factorization.

78253106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12648.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 78253106 is about 8846.0785662349. The cubic root of 78253106 is about 427.7275211263.

The spelling of 78253106 in words is "seventy-eight million, two hundred fifty-three thousand, one hundred six".