6400350 has 96 divisors (see below), whose sum is σ = 19284480. Its totient is φ = 1548000.

The previous prime is 6400349. The next prime is 6400357. The reversal of 6400350 is 530046.

It is a happy number.

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

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400357) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 14635 + ... + 15065.

It is an arithmetic number, because the mean of its divisors is an integer number (200880).

Almost surely, 2^6400350 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6400350, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9642240).

6400350 is an abundant number, since it is smaller than the sum of its proper divisors (12884130).

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

6400350 is a wasteful number, since it uses less digits than its factorization.

6400350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463 (or 452 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 18.

The square root of 6400350 is about 2529.8913020128. The cubic root of 6400350 is about 185.6669377747. Note that the first 3 decimals are identical.

Adding to 6400350 its reverse (530046), we get a palindrome (6930396).

The spelling of 6400350 in words is "six million, four hundred thousand, three hundred fifty".