220678534 has 8 divisors (see below), whose sum is σ = 331110360. Its totient is φ = 110308416.

The previous prime is 220678531. The next prime is 220678543. The reversal of 220678534 is 435876022.

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

It is a junction number, because it is equal to n+sod(n) for n = 220678493 and 220678502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220678531) 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 3 ways as a sum of consecutive naturals, for example, 5104 + ... + 21619.

It is an arithmetic number, because the mean of its divisors is an integer number (41388795).

Almost surely, 2^220678534 is an apocalyptic number.

220678534 is a deficient number, since it is larger than the sum of its proper divisors (110431826).

220678534 is a wasteful number, since it uses less digits than its factorization.

220678534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30854.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 220678534 is about 14855.2527410341. The cubic root of 220678534 is about 604.3010702446.

The spelling of 220678534 in words is "two hundred twenty million, six hundred seventy-eight thousand, five hundred thirty-four".