428266616 has 8 divisors (see below), whose sum is σ = 802999920. Its totient is φ = 214133304.

The previous prime is 428266603. The next prime is 428266621. The reversal of 428266616 is 616662824.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26766656 + ... + 26766671.

It is an arithmetic number, because the mean of its divisors is an integer number (100374990).

Almost surely, 2^428266616 is an apocalyptic number.

It is an amenable number.

428266616 is a deficient number, since it is larger than the sum of its proper divisors (374733304).

428266616 is a wasteful number, since it uses less digits than its factorization.

428266616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53533333 (or 53533329 counting only the distinct ones).

The product of its digits is 165888, while the sum is 41.

The square root of 428266616 is about 20694.6035477851. The cubic root of 428266616 is about 753.7686555580.

The spelling of 428266616 in words is "four hundred twenty-eight million, two hundred sixty-six thousand, six hundred sixteen".