40069528 has 24 divisors (see below), whose sum is σ = 76036140. Its totient is φ = 19796000.

The previous prime is 40069501. The next prime is 40069529. The reversal of 40069528 is 82596004.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 40069493 and 40069502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40069529) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 81363 + ... + 81853.

Almost surely, 2^40069528 is an apocalyptic number.

It is an amenable number.

40069528 is a deficient number, since it is larger than the sum of its proper divisors (35966612).

40069528 is a wasteful number, since it uses less digits than its factorization.

40069528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 699 (or 594 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 40069528 is about 6330.0496048609. The cubic root of 40069528 is about 342.1932266495.

The spelling of 40069528 in words is "forty million, sixty-nine thousand, five hundred twenty-eight".