128490954 has 8 divisors (see below), whose sum is σ = 256981920. Its totient is φ = 42830316.

The previous prime is 128490911. The next prime is 128490983. The reversal of 128490954 is 459094821.

It is a sphenic number, since it is the product of 3 distinct primes.

128490954 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10707574 + ... + 10707585.

It is an arithmetic number, because the mean of its divisors is an integer number (32122740).

Almost surely, 2^128490954 is an apocalyptic number.

128490954 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

128490954 is a wasteful number, since it uses less digits than its factorization.

128490954 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21415164.

The product of its (nonzero) digits is 103680, while the sum is 42.

The square root of 128490954 is about 11335.3850397770. The cubic root of 128490954 is about 504.6119346567.

The spelling of 128490954 in words is "one hundred twenty-eight million, four hundred ninety thousand, nine hundred fifty-four".