428825416 has 8 divisors (see below), whose sum is σ = 804047670. Its totient is φ = 214412704.

The previous prime is 428825413. The next prime is 428825417. The reversal of 428825416 is 614528824.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 422302500 + 6522916 = 20550^2 + 2554^2 .

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

It is not an unprimeable number, because it can be changed into a prime (428825413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26801581 + ... + 26801596.

Almost surely, 2^428825416 is an apocalyptic number.

It is an amenable number.

428825416 is a deficient number, since it is larger than the sum of its proper divisors (375222254).

428825416 is a wasteful number, since it uses less digits than its factorization.

428825416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53603183 (or 53603179 counting only the distinct ones).

The product of its digits is 122880, while the sum is 40.

The square root of 428825416 is about 20708.1002508680. The cubic root of 428825416 is about 754.0963508502.

The spelling of 428825416 in words is "four hundred twenty-eight million, eight hundred twenty-five thousand, four hundred sixteen".