40828005 has 24 divisors (see below), whose sum is σ = 72497880. Its totient is φ = 21242880.

The previous prime is 40827977. The next prime is 40828009. The reversal of 40828005 is 50082804.

It can be written as a sum of positive squares in 4 ways, for example, as 4322241 + 36505764 = 2079^2 + 6042^2 .

It is not a de Polignac number, because 40828005 - 2⁸ = 40827749 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40828005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40828009) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9220 + ... + 12909.

It is an arithmetic number, because the mean of its divisors is an integer number (3020745).

Almost surely, 2^40828005 is an apocalyptic number.

40828005 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40828005 is a deficient number, since it is larger than the sum of its proper divisors (31669875).

40828005 is a wasteful number, since it uses less digits than its factorization.

40828005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22181 (or 22178 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 40828005 is about 6389.6795694307. The cubic root of 40828005 is about 344.3388725094.

The spelling of 40828005 in words is "forty million, eight hundred twenty-eight thousand, five".