78169230 has 96 divisors (see below), whose sum is σ = 226605600. Its totient is φ = 18579456.

The previous prime is 78169229. The next prime is 78169279. The reversal of 78169230 is 3296187.

It is a super-2 number, since 2×78169230² = 12220857037585800, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 27726 + ... + 30414.

It is an arithmetic number, because the mean of its divisors is an integer number (2360475).

Almost surely, 2^78169230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78169230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113302800).

78169230 is an abundant number, since it is smaller than the sum of its proper divisors (148436370).

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

78169230 is a wasteful number, since it uses less digits than its factorization.

78169230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2738 (or 2735 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 78169230 is about 8841.3364374398. The cubic root of 78169230 is about 427.5746458347.

The spelling of 78169230 in words is "seventy-eight million, one hundred sixty-nine thousand, two hundred thirty".