128554 has 16 divisors (see below), whose sum is σ = 216000. Its totient is φ = 57024.

The previous prime is 128551. The next prime is 128563. The reversal of 128554 is 455821.

128554 = 23² + 24² + ... + 73².

It is a super-2 number, since 2×128554² = 33052261832, which contains 22 as substring.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (128551) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 547 + ... + 745.

It is an arithmetic number, because the mean of its divisors is an integer number (13500).

2¹²⁸⁵⁵⁴ is an apocalyptic number.

128554 is a deficient number, since it is larger than the sum of its proper divisors (87446).

128554 is a wasteful number, since it uses less digits than its factorization.

128554 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237.

The product of its digits is 1600, while the sum is 25.

The square root of 128554 is about 358.5442789949. The cubic root of 128554 is about 50.4694452949.

The spelling of 128554 in words is "one hundred twenty-eight thousand, five hundred fifty-four".