40327728 has 80 divisors (see below), whose sum is σ = 125349120. Its totient is φ = 10914048.

The previous prime is 40327697. The next prime is 40327733. The reversal of 40327728 is 82772304.

It is a super-4 number, since 4×40327728⁴ (a number of 32 digits) contains 4444 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3226 + ... + 9542.

It is an arithmetic number, because the mean of its divisors is an integer number (1566864).

Almost surely, 2^40327728 is an apocalyptic number.

40327728 is a gapful number since it is divisible by the number (48) 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 40327728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62674560).

40327728 is an abundant number, since it is smaller than the sum of its proper divisors (85021392).

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

40327728 is a wasteful number, since it uses less digits than its factorization.

40327728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6354 (or 6348 counting only the distinct ones).

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 40327728 is about 6350.4116402010. The cubic root of 40327728 is about 342.9266616968.

The spelling of 40327728 in words is "forty million, three hundred twenty-seven thousand, seven hundred twenty-eight".