78131022 has 16 divisors (see below), whose sum is σ = 156401280. Its totient is φ = 26020472.

The previous prime is 78130973. The next prime is 78131047. The reversal of 78131022 is 22013187.

It is a super-2 number, since 2×78131022² = 12208913197528968, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78130983 and 78131001.

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 7 ways as a sum of consecutive naturals, for example, 2383 + ... + 12725.

It is an arithmetic number, because the mean of its divisors is an integer number (9775080).

Almost surely, 2^78131022 is an apocalyptic number.

78131022 is an abundant number, since it is smaller than the sum of its proper divisors (78270258).

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

78131022 is a wasteful number, since it uses less digits than its factorization.

78131022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11607.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 78131022 is about 8839.1754140304. The cubic root of 78131022 is about 427.5049703605.

The spelling of 78131022 in words is "seventy-eight million, one hundred thirty-one thousand, twenty-two".