128278062 has 48 divisors (see below), whose sum is σ = 312998400. Its totient is φ = 37616400.

The previous prime is 128278027. The next prime is 128278069. The reversal of 128278062 is 260872821.

It is a happy number.

It is a super-2 number, since 2×128278062² = 32910522380951688, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128278069) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4312 + ... + 16587.

It is an arithmetic number, because the mean of its divisors is an integer number (6520800).

Almost surely, 2^128278062 is an apocalyptic number.

128278062 is an abundant number, since it is smaller than the sum of its proper divisors (184720338).

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

128278062 is a wasteful number, since it uses less digits than its factorization.

128278062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20949 (or 20946 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 128278062 is about 11325.9905527066. The cubic root of 128278062 is about 504.3330895281. Note that the first 3 decimals are identical.

The spelling of 128278062 in words is "one hundred twenty-eight million, two hundred seventy-eight thousand, sixty-two".