442262644 has 24 divisors (see below), whose sum is σ = 801468360. Its totient is φ = 213287424.

The previous prime is 442262629. The next prime is 442262651. The reversal of 442262644 is 446262244.

It can be written as a sum of positive squares in 4 ways, for example, as 198528100 + 243734544 = 14090^2 + 15612^2 .

It is a congruent number.

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, 220912 + ... + 222904.

It is an arithmetic number, because the mean of its divisors is an integer number (33394515).

Almost surely, 2^442262644 is an apocalyptic number.

It is an amenable number.

442262644 is a deficient number, since it is larger than the sum of its proper divisors (359205716).

442262644 is a wasteful number, since it uses less digits than its factorization.

442262644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3939 (or 3937 counting only the distinct ones).

The product of its digits is 73728, while the sum is 34.

The square root of 442262644 is about 21030.0414645335. The cubic root of 442262644 is about 761.8920103325.

The spelling of 442262644 in words is "four hundred forty-two million, two hundred sixty-two thousand, six hundred forty-four".