128138014 has 32 divisors (see below), whose sum is σ = 212290560. Its totient is φ = 57736800.

The previous prime is 128138009. The next prime is 128138041. The reversal of 128138014 is 410831821.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236584 + ... + 237124.

It is an arithmetic number, because the mean of its divisors is an integer number (6634080).

Almost surely, 2^128138014 is an apocalyptic number.

128138014 is a deficient number, since it is larger than the sum of its proper divisors (84152546).

128138014 is a wasteful number, since it uses less digits than its factorization.

128138014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 856.

The product of its (nonzero) digits is 1536, while the sum is 28.

The square root of 128138014 is about 11319.8062704271. The cubic root of 128138014 is about 504.1494869208.

Adding to 128138014 its reverse (410831821), we get a palindrome (538969835).

The spelling of 128138014 in words is "one hundred twenty-eight million, one hundred thirty-eight thousand, fourteen".