78022087 has 8 divisors (see below), whose sum is σ = 91662480. Its totient is φ = 65472960.

The previous prime is 78022073. The next prime is 78022099.

78022087 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-78022087 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78022787) 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, 272662 + ... + 272947.

It is an arithmetic number, because the mean of its divisors is an integer number (11457810).

Almost surely, 2^78022087 is an apocalyptic number.

78022087 is a deficient number, since it is larger than the sum of its proper divisors (13640393).

78022087 is a wasteful number, since it uses less digits than its factorization.

78022087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545633.

The product of its (nonzero) digits is 12544, while the sum is 34.

The square root of 78022087 is about 8833.0112079630. The cubic root of 78022087 is about 427.3061935143.

It can be divided in two parts, 7802 and 2087, that added together give a palindrome (9889).

The spelling of 78022087 in words is "seventy-eight million, twenty-two thousand, eighty-seven".