6401424 has 40 divisors (see below), whose sum is σ = 16646752. Its totient is φ = 2119680.

The previous prime is 6401419. The next prime is 6401459. The reversal of 6401424 is 4241046.

It is a self number, because there is not a number n which added to its sum of digits gives 6401424.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8919 + ... + 9609.

Almost surely, 2^6401424 is an apocalyptic number.

It is an amenable number.

6401424 is an abundant number, since it is smaller than the sum of its proper divisors (10245328).

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

6401424 is a wasteful number, since it uses less digits than its factorization.

6401424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 895 (or 889 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 6401424 is about 2530.1035551929. The cubic root of 6401424 is about 185.6773223702.

It can be divided in two parts, 640142 and 4, that added together give a triangular number (640146 = T₁₁₃₁).

The spelling of 6401424 in words is "six million, four hundred one thousand, four hundred twenty-four".