128954736 has 60 divisors (see below), whose sum is σ = 362193832. Its totient is φ = 42830208.

The previous prime is 128954713. The next prime is 128954743. The reversal of 128954736 is 637459821.

It is a junction number, because it is equal to n+sod(n) for n = 128954691 and 128954700.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42750 + ... + 45666.

Almost surely, 2^128954736 is an apocalyptic number.

128954736 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 128954736, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181096916).

128954736 is an abundant number, since it is smaller than the sum of its proper divisors (233239096).

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

128954736 is a wasteful number, since it uses less digits than its factorization.

128954736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3238 (or 3229 counting only the distinct ones).

The product of its digits is 362880, while the sum is 45.

The square root of 128954736 is about 11355.8238802828. The cubic root of 128954736 is about 505.2183299319.

The spelling of 128954736 in words is "one hundred twenty-eight million, nine hundred fifty-four thousand, seven hundred thirty-six".