78126087 has 32 divisors (see below), whose sum is σ = 117895680. Its totient is φ = 45682560.

The previous prime is 78126049. The next prime is 78126109. The reversal of 78126087 is 78062187.

It is not a de Polignac number, because 78126087 - 2⁷ = 78125959 is a prime.

It is a super-2 number, since 2×78126087² = 12207370939863138, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78126017) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 75262 + ... + 76292.

It is an arithmetic number, because the mean of its divisors is an integer number (3684240).

Almost surely, 2^78126087 is an apocalyptic number.

78126087 is a deficient number, since it is larger than the sum of its proper divisors (39769593).

78126087 is a wasteful number, since it uses less digits than its factorization.

78126087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1143.

The product of its (nonzero) digits is 37632, while the sum is 39.

The square root of 78126087 is about 8838.8962546237. The cubic root of 78126087 is about 427.4959693201.

The spelling of 78126087 in words is "seventy-eight million, one hundred twenty-six thousand, eighty-seven".