40000530 has 32 divisors (see below), whose sum is σ = 96171264. Its totient is φ = 10647936.

The previous prime is 40000523. The next prime is 40000537. The reversal of 40000530 is 3500004.

It is an interprime number because it is at equal distance from previous prime (40000523) and next prime (40000537).

It is not an unprimeable number, because it can be changed into a prime (40000537) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27399 + ... + 28821.

It is an arithmetic number, because the mean of its divisors is an integer number (3005352).

Almost surely, 2^40000530 is an apocalyptic number.

40000530 is an abundant number, since it is smaller than the sum of its proper divisors (56170734).

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

40000530 is a wasteful number, since it uses less digits than its factorization.

40000530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2370.

The product of its (nonzero) digits is 60, while the sum is 12.

The square root of 40000530 is about 6324.5972203770. The cubic root of 40000530 is about 341.9966998074.

Adding to 40000530 its reverse (3500004), we get a palindrome (43500534).

The spelling of 40000530 in words is "forty million, five hundred thirty", and thus it is an aban number.