40001850 has 240 divisors, whose sum is σ = 136116288. Its totient is φ = 8501760.

The previous prime is 40001831. The next prime is 40001861. The reversal of 40001850 is 5810004.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

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 119 ways as a sum of consecutive naturals, for example, 481909 + ... + 481991.

Almost surely, 2^40001850 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40001850, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68058144).

40001850 is an abundant number, since it is smaller than the sum of its proper divisors (96114438).

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

40001850 is a wasteful number, since it uses less digits than its factorization.

40001850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 117 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 40001850 is about 6324.7015739875. The cubic root of 40001850 is about 342.0004616799. Note that the first 3 decimals are identical.

Adding to 40001850 its reverse (5810004), we get a palindrome (45811854).

The spelling of 40001850 in words is "forty million, one thousand, eight hundred fifty".