78726102 has 64 divisors (see below), whose sum is σ = 202245120. Its totient is φ = 19857024.

The previous prime is 78726071. The next prime is 78726127. The reversal of 78726102 is 20162787.

It is a super-2 number, since 2×78726102² = 12395598272228808, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 9424 + ... + 15692.

It is an arithmetic number, because the mean of its divisors is an integer number (3160080).

Almost surely, 2^78726102 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 78726102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101122560).

78726102 is an abundant number, since it is smaller than the sum of its proper divisors (123519018).

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

78726102 is a wasteful number, since it uses less digits than its factorization.

78726102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6317.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 78726102 is about 8872.7730727208. The cubic root of 78726102 is about 428.5875813277.

Adding to 78726102 its reverse (20162787), we get a palindrome (98888889).

The spelling of 78726102 in words is "seventy-eight million, seven hundred twenty-six thousand, one hundred two".