40000650 has 24 divisors (see below), whose sum is σ = 99201984. Its totient is φ = 10666800.

The previous prime is 40000627. The next prime is 40000651. The reversal of 40000650 is 5600004.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40000651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 133186 + ... + 133485.

It is an arithmetic number, because the mean of its divisors is an integer number (4133416).

Almost surely, 2^40000650 is an apocalyptic number.

40000650 is an abundant number, since it is smaller than the sum of its proper divisors (59201334).

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

40000650 is a wasteful number, since it uses less digits than its factorization.

40000650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266686 (or 266681 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 40000650 is about 6324.6067071400. The cubic root of 40000650 is about 341.9970417992.

Adding to 40000650 its reverse (5600004), we get a palindrome (45600654).

The spelling of 40000650 in words is "forty million, six hundred fifty", and thus it is an aban number.