40405528 has 8 divisors (see below), whose sum is σ = 75760380. Its totient is φ = 20202760.

The previous prime is 40405471. The next prime is 40405529. The reversal of 40405528 is 82550404.

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 40405496 and 40405505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40405529) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2525338 + ... + 2525353.

Almost surely, 2^40405528 is an apocalyptic number.

It is an amenable number.

40405528 is a deficient number, since it is larger than the sum of its proper divisors (35354852).

40405528 is a wasteful number, since it uses less digits than its factorization.

40405528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5050697 (or 5050693 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 28.

The square root of 40405528 is about 6356.5342758456. The cubic root of 40405528 is about 343.1470440260.

The spelling of 40405528 in words is "forty million, four hundred five thousand, five hundred twenty-eight".