40728234 has 16 divisors (see below), whose sum is σ = 84084480. Its totient is φ = 13138080.

The previous prime is 40728217. The next prime is 40728241. The reversal of 40728234 is 43282704.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109299 + ... + 109670.

It is an arithmetic number, because the mean of its divisors is an integer number (5255280).

Almost surely, 2^40728234 is an apocalyptic number.

40728234 is an abundant number, since it is smaller than the sum of its proper divisors (43356246).

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

40728234 is a wasteful number, since it uses less digits than its factorization.

40728234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219005.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 40728234 is about 6381.8675949913. The cubic root of 40728234 is about 344.0581578703.

The spelling of 40728234 in words is "forty million, seven hundred twenty-eight thousand, two hundred thirty-four".