78387126 has 16 divisors (see below), whose sum is σ = 157272624. Its totient is φ = 26045984.

The previous prime is 78387107. The next prime is 78387149. The reversal of 78387126 is 62178387.

It is a super-2 number, since 2×78387126² = 12289083045079752, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18705 + ... + 22508.

It is an arithmetic number, because the mean of its divisors is an integer number (9829539).

Almost surely, 2^78387126 is an apocalyptic number.

78387126 is an abundant number, since it is smaller than the sum of its proper divisors (78885498).

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

78387126 is a wasteful number, since it uses less digits than its factorization.

78387126 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41535.

The product of its digits is 112896, while the sum is 42.

The square root of 78387126 is about 8853.6504335782. The cubic root of 78387126 is about 427.9715640408.

The spelling of 78387126 in words is "seventy-eight million, three hundred eighty-seven thousand, one hundred twenty-six".