6442408 has 32 divisors (see below), whose sum is σ = 14284800. Its totient is φ = 2665152.

The previous prime is 6442399. The next prime is 6442427. The reversal of 6442408 is 8042446.

It is a Harshad number since it is a multiple of its sum of digits (28).

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, 360 + ... + 3607.

It is an arithmetic number, because the mean of its divisors is an integer number (446400).

Almost surely, 2^6442408 is an apocalyptic number.

It is an amenable number.

6442408 is an abundant number, since it is smaller than the sum of its proper divisors (7842392).

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

6442408 is a wasteful number, since it uses less digits than its factorization.

6442408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4009 (or 4005 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 6442408 is about 2538.1899062127. The cubic root of 6442408 is about 186.0727352638.

The spelling of 6442408 in words is "six million, four hundred forty-two thousand, four hundred eight".