128936214 has 24 divisors (see below), whose sum is σ = 304758792. Its totient is φ = 39071520.

The previous prime is 128936189. The next prime is 128936219. The reversal of 128936214 is 412639821.

128936214 is a `hidden beast` number, since 1 + 28 + 9 + 3 + 621 + 4 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128936219) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 325399 + ... + 325794.

It is an arithmetic number, because the mean of its divisors is an integer number (12698283).

Almost surely, 2^128936214 is an apocalyptic number.

128936214 is an abundant number, since it is smaller than the sum of its proper divisors (175822578).

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

128936214 is a wasteful number, since it uses less digits than its factorization.

128936214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651212 (or 651209 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 128936214 is about 11355.0083223219. The cubic root of 128936214 is about 505.1941403021.

The spelling of 128936214 in words is "one hundred twenty-eight million, nine hundred thirty-six thousand, two hundred fourteen".