40351206 has 40 divisors (see below), whose sum is σ = 94180824. Its totient is φ = 11524800.

The previous prime is 40351187. The next prime is 40351237. The reversal of 40351206 is 60215304.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nialpdrome in base 7.

It is a zygodrome in base 7.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 13006 + ... + 15806.

Almost surely, 2^40351206 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40351206, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47090412).

40351206 is an abundant number, since it is smaller than the sum of its proper divisors (53829618).

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

40351206 is an equidigital number, since it uses as much as digits as its factorization.

40351206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2834 (or 2813 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 40351206 is about 6352.2599128184. The cubic root of 40351206 is about 342.9931971440.

The spelling of 40351206 in words is "forty million, three hundred fifty-one thousand, two hundred six".