78133846 has 16 divisors (see below), whose sum is σ = 134910720. Its totient is φ = 33244200.

The previous prime is 78133841. The next prime is 78133873. The reversal of 78133846 is 64833187.

It is a super-2 number, since 2×78133846² = 12209795781503432, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78133799 and 78133808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78133841) 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, 18130 + ... + 22021.

It is an arithmetic number, because the mean of its divisors is an integer number (8431920).

Almost surely, 2^78133846 is an apocalyptic number.

78133846 is a deficient number, since it is larger than the sum of its proper divisors (56776874).

78133846 is a wasteful number, since it uses less digits than its factorization.

78133846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40299.

The product of its digits is 96768, while the sum is 40.

The square root of 78133846 is about 8839.3351559945. The cubic root of 78133846 is about 427.5101209373.

The spelling of 78133846 in words is "seventy-eight million, one hundred thirty-three thousand, eight hundred forty-six".