428349672 has 48 divisors (see below), whose sum is σ = 1172092740. Its totient is φ = 141308928.

The previous prime is 428349671. The next prime is 428349707. The reversal of 428349672 is 276943824.

It can be written as a sum of positive squares in 2 ways, for example, as 392277636 + 36072036 = 19806^2 + 6006^2 .

It is not an unprimeable number, because it can be changed into a prime (428349671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23683 + ... + 37650.

Almost surely, 2^428349672 is an apocalyptic number.

It is an amenable number.

428349672 is an abundant number, since it is smaller than the sum of its proper divisors (743743068).

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

428349672 is a wasteful number, since it uses less digits than its factorization.

428349672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61442 (or 61435 counting only the distinct ones).

The product of its digits is 580608, while the sum is 45.

The square root of 428349672 is about 20696.6101572214. The cubic root of 428349672 is about 753.8173798498.

The spelling of 428349672 in words is "four hundred twenty-eight million, three hundred forty-nine thousand, six hundred seventy-two".