6402444 has 24 divisors (see below), whose sum is σ = 15193920. Its totient is φ = 2097744.

The previous prime is 6402439. The next prime is 6402457. The reversal of 6402444 is 4442046.

It is a super-3 number, since 3×6402444³ (a number of 21 digits) contains 333 as substring.

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, 3814 + ... + 5229.

It is an arithmetic number, because the mean of its divisors is an integer number (633080).

Almost surely, 2^6402444 is an apocalyptic number.

It is an amenable number.

6402444 is an abundant number, since it is smaller than the sum of its proper divisors (8791476).

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

6402444 is a wasteful number, since it uses less digits than its factorization.

6402444 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9109 (or 9107 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

The square root of 6402444 is about 2530.3051199411. The cubic root of 6402444 is about 185.6871837600.

The spelling of 6402444 in words is "six million, four hundred two thousand, four hundred forty-four".