442699628 has 12 divisors (see below), whose sum is σ = 885399312. Its totient is φ = 189728400.

The previous prime is 442699613. The next prime is 442699661. The reversal of 442699628 is 826996244.

It is a happy number.

442699628 is an admirable number.

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, 7905323 + ... + 7905378.

It is an arithmetic number, because the mean of its divisors is an integer number (73783276).

Almost surely, 2^442699628 is an apocalyptic number.

It is an amenable number.

442699628 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

442699628 is a wasteful number, since it uses less digits than its factorization.

442699628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15810712 (or 15810710 counting only the distinct ones).

The product of its digits is 1492992, while the sum is 50.

The square root of 442699628 is about 21040.4284176915. The cubic root of 442699628 is about 762.1428605375.

The spelling of 442699628 in words is "four hundred forty-two million, six hundred ninety-nine thousand, six hundred twenty-eight".