40394328 has 32 divisors (see below), whose sum is σ = 108754800. Its totient is φ = 12428928.

The previous prime is 40394327. The next prime is 40394339. The reversal of 40394328 is 82349304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40394327) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64423 + ... + 65046.

Almost surely, 2^40394328 is an apocalyptic number.

It is an amenable number.

40394328 is an abundant number, since it is smaller than the sum of its proper divisors (68360472).

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

40394328 is a wasteful number, since it uses less digits than its factorization.

40394328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129491 (or 129487 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 40394328 is about 6355.6532315727. The cubic root of 40394328 is about 343.1153354765.

The spelling of 40394328 in words is "forty million, three hundred ninety-four thousand, three hundred twenty-eight".