78022143 has 16 divisors (see below), whose sum is σ = 115840000. Its totient is φ = 51901560.

The previous prime is 78022127. The next prime is 78022171. The reversal of 78022143 is 34122087.

It is not a de Polignac number, because 78022143 - 2⁴ = 78022127 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78022123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10578 + ... + 16368.

It is an arithmetic number, because the mean of its divisors is an integer number (7240000).

Almost surely, 2^78022143 is an apocalyptic number.

78022143 is a deficient number, since it is larger than the sum of its proper divisors (37817857).

78022143 is a wasteful number, since it uses less digits than its factorization.

78022143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6299 (or 6293 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 78022143 is about 8833.0143778894. The cubic root of 78022143 is about 427.3062957467.

The spelling of 78022143 in words is "seventy-eight million, twenty-two thousand, one hundred forty-three".