128201364 has 18 divisors (see below), whose sum is σ = 324064650. Its totient is φ = 42733776.

The previous prime is 128201327. The next prime is 128201371. The reversal of 128201364 is 463102821.

It can be written as a sum of positive squares in only one way, i.e., 68757264 + 59444100 = 8292^2 + 7710^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

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, 1780539 + ... + 1780610.

Almost surely, 2^128201364 is an apocalyptic number.

It is an amenable number.

128201364 is an abundant number, since it is smaller than the sum of its proper divisors (195863286).

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

128201364 is a wasteful number, since it uses less digits than its factorization.

128201364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3561159 (or 3561154 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 128201364 is about 11322.6041174281. The cubic root of 128201364 is about 504.2325551876.

The spelling of 128201364 in words is "one hundred twenty-eight million, two hundred one thousand, three hundred sixty-four".