40539328 has 14 divisors (see below), whose sum is σ = 80445356. Its totient is φ = 20269632.

The previous prime is 40539311. The next prime is 40539337. The reversal of 40539328 is 82393504.

It is a happy number.

It is a super-2 number, since 2×40539328² = 3286874229383168, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40539293 and 40539302.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 316650 + ... + 316777.

Almost surely, 2^40539328 is an apocalyptic number.

It is an amenable number.

40539328 is a deficient number, since it is larger than the sum of its proper divisors (39906028).

40539328 is an equidigital number, since it uses as much as digits as its factorization.

40539328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633439 (or 633429 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 40539328 is about 6367.0501804211. The cubic root of 40539328 is about 343.5253956238.

The spelling of 40539328 in words is "forty million, five hundred thirty-nine thousand, three hundred twenty-eight".