40650 has 24 divisors (see below), whose sum is σ = 101184. Its totient is φ = 10800.

The previous prime is 40639. The next prime is 40693. The reversal of 40650 is 5604.

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

It is an Ulam number.

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15 + ... + 285.

It is an arithmetic number, because the mean of its divisors is an integer number (4216).

2⁴⁰⁶⁵⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40650, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50592).

40650 is an abundant number, since it is smaller than the sum of its proper divisors (60534).

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

40650 is a wasteful number, since it uses less digits than its factorization.

40650 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286 (or 281 counting only the distinct ones).

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

The square root of 40650 is about 201.6184515366. The cubic root of 40650 is about 34.3837718661.

The spelling of 40650 in words is "forty thousand, six hundred fifty".