428406044 has 24 divisors (see below), whose sum is σ = 825972336. Its totient is φ = 192800000.

The previous prime is 428406037. The next prime is 428406059. The reversal of 428406044 is 440604824.

It is a self number, because there is not a number n which added to its sum of digits gives 428406044.

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, 43757 + ... + 52644.

It is an arithmetic number, because the mean of its divisors is an integer number (34415514).

Almost surely, 2^428406044 is an apocalyptic number.

428406044 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

428406044 is a deficient number, since it is larger than the sum of its proper divisors (397566292).

428406044 is a wasteful number, since it uses less digits than its factorization.

428406044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96517 (or 96515 counting only the distinct ones).

The product of its (nonzero) digits is 24576, while the sum is 32.

The square root of 428406044 is about 20697.9719779499. The cubic root of 428406044 is about 753.8504465491.

It can be divided in two parts, 42840 and 6044, that added together give a palindrome (48884).

The spelling of 428406044 in words is "four hundred twenty-eight million, four hundred six thousand, forty-four".