78164233 has 16 divisors (see below), whose sum is σ = 94464000. Its totient is φ = 63180432.

The previous prime is 78164231. The next prime is 78164263. The reversal of 78164233 is 33246187.

It is a happy number.

It is not a de Polignac number, because 78164233 - 2¹ = 78164231 is a prime.

It is a super-2 number, since 2×78164233² = 12219294640956578, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (78164231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30558 + ... + 33016.

It is an arithmetic number, because the mean of its divisors is an integer number (5904000).

Almost surely, 2^78164233 is an apocalyptic number.

It is an amenable number.

78164233 is a deficient number, since it is larger than the sum of its proper divisors (16299767).

78164233 is a wasteful number, since it uses less digits than its factorization.

78164233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2724.

The product of its digits is 24192, while the sum is 34.

The square root of 78164233 is about 8841.0538398994. The cubic root of 78164233 is about 427.5655346792.

The spelling of 78164233 in words is "seventy-eight million, one hundred sixty-four thousand, two hundred thirty-three".