128473455 has 32 divisors (see below), whose sum is σ = 231487488. Its totient is φ = 60278400.

The previous prime is 128473453. The next prime is 128473463. The reversal of 128473455 is 554374821.

It is not a de Polignac number, because 128473455 - 2¹ = 128473453 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (128473453) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7444 + ... + 17673.

It is an arithmetic number, because the mean of its divisors is an integer number (7233984).

Almost surely, 2^128473455 is an apocalyptic number.

128473455 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

128473455 is a deficient number, since it is larger than the sum of its proper divisors (103014033).

128473455 is a wasteful number, since it uses less digits than its factorization.

128473455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25167.

The product of its digits is 134400, while the sum is 39.

The square root of 128473455 is about 11334.6131385240. The cubic root of 128473455 is about 504.5890261565.

The spelling of 128473455 in words is "one hundred twenty-eight million, four hundred seventy-three thousand, four hundred fifty-five".