43128906 has 8 divisors (see below), whose sum is σ = 86257824. Its totient is φ = 14376300.

The previous prime is 43128863. The next prime is 43128931. The reversal of 43128906 is 60982134.

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

43128906 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, 3594070 + ... + 3594081.

It is an arithmetic number, because the mean of its divisors is an integer number (10782228).

Almost surely, 2^43128906 is an apocalyptic number.

43128906 is the 4154-th centered pentagonal number.

43128906 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.

43128906 is a wasteful number, since it uses less digits than its factorization.

43128906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7188156.

The product of its (nonzero) digits is 10368, while the sum is 33.

The square root of 43128906 is about 6567.2601593054. The cubic root of 43128906 is about 350.6895413104.

The spelling of 43128906 in words is "forty-three million, one hundred twenty-eight thousand, nine hundred six".