4426640 has 20 divisors (see below), whose sum is σ = 10292124. Its totient is φ = 1770624.

The previous prime is 4426627. The next prime is 4426651. The reversal of 4426640 is 466244.

It can be written as a sum of positive squares in 2 ways, for example, as 1157776 + 3268864 = 1076^2 + 1808^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27587 + ... + 27746.

Almost surely, 2^4426640 is an apocalyptic number.

4426640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4426640 is an abundant number, since it is smaller than the sum of its proper divisors (5865484).

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

4426640 is a wasteful number, since it uses less digits than its factorization.

4426640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55346 (or 55340 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 4426640 is about 2103.9581744892. The cubic root of 4426640 is about 164.1942967858.

The spelling of 4426640 in words is "four million, four hundred twenty-six thousand, six hundred forty".