6446426 has 32 divisors (see below), whose sum is σ = 11515392. Its totient is φ = 2649600.

The previous prime is 6446413. The next prime is 6446437. The reversal of 6446426 is 6246446.

6446426 = T₃₁₅ + T₃₁₆ + ... + T₄₁₁.

It is a junction number, because it is equal to n+sod(n) for n = 6446392 and 6446401.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63776 + ... + 63876.

It is an arithmetic number, because the mean of its divisors is an integer number (359856).

Almost surely, 2^6446426 is an apocalyptic number.

6446426 is a deficient number, since it is larger than the sum of its proper divisors (5068966).

6446426 is a wasteful number, since it uses less digits than its factorization.

6446426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254.

The product of its digits is 27648, while the sum is 32.

The square root of 6446426 is about 2538.9812917783. The cubic root of 6446426 is about 186.1114104960. Note that the first 3 decimals are identical.

It can be divided in two parts, 6446 and 426, that multiplied together give a triangular number (2745996 = T₂₃₄₃).

The spelling of 6446426 in words is "six million, four hundred forty-six thousand, four hundred twenty-six".