78232101 has 8 divisors (see below), whose sum is σ = 109799520. Its totient is φ = 49409712.

The previous prime is 78232067. The next prime is 78232117. The reversal of 78232101 is 10123287.

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

It is not a de Polignac number, because 78232101 - 2⁷ = 78231973 is a prime.

It is a super-2 number, since 2×78232101² = 12240523253748402, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78232601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 686190 + ... + 686303.

It is an arithmetic number, because the mean of its divisors is an integer number (13724940).

Almost surely, 2^78232101 is an apocalyptic number.

It is an amenable number.

78232101 is a deficient number, since it is larger than the sum of its proper divisors (31567419).

78232101 is a wasteful number, since it uses less digits than its factorization.

78232101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372515.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 78232101 is about 8844.8912373189. The cubic root of 78232101 is about 427.6892469455.

Adding to 78232101 its reverse (10123287), we get a palindrome (88355388).

The spelling of 78232101 in words is "seventy-eight million, two hundred thirty-two thousand, one hundred one".