67890389256 has 24 divisors (see below), whose sum is σ = 183869804430. Its totient is φ = 22630129728.

The previous prime is 67890389183. The next prime is 67890389263. The reversal of 67890389256 is 65298309876.

It can be written as a sum of positive squares in only one way, i.e., 56770686756 + 11119702500 = 238266^2 + 105450^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×67890389256³ (a number of 33 digits) contains 333 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 67890389193 and 67890389202.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 471460965 + ... + 471461108.

Almost surely, 2^67890389256 is an apocalyptic number.

It is an amenable number.

67890389256 is an abundant number, since it is smaller than the sum of its proper divisors (115979415174).

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

67890389256 is a wasteful number, since it uses less digits than its factorization.

67890389256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 942922085 (or 942922078 counting only the distinct ones).

The product of its (nonzero) digits is 39191040, while the sum is 63.

The spelling of 67890389256 in words is "sixty-seven billion, eight hundred ninety million, three hundred eighty-nine thousand, two hundred fifty-six".