428187316 has 18 divisors (see below), whose sum is σ = 756966210. Its totient is φ = 211915440.

The previous prime is 428187311. The next prime is 428187323. The reversal of 428187316 is 613781824.

It can be written as a sum of positive squares in only one way, i.e., 392832400 + 35354916 = 19820^2 + 5946^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428187311) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 431581 + ... + 432571.

Almost surely, 2^428187316 is an apocalyptic number.

It is an amenable number.

428187316 is a deficient number, since it is larger than the sum of its proper divisors (328778894).

428187316 is an equidigital number, since it uses as much as digits as its factorization.

428187316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2095 (or 1102 counting only the distinct ones).

The product of its digits is 64512, while the sum is 40.

The square root of 428187316 is about 20692.6875006607. The cubic root of 428187316 is about 753.7221288214.

The spelling of 428187316 in words is "four hundred twenty-eight million, one hundred eighty-seven thousand, three hundred sixteen".