428355708 has 48 divisors (see below), whose sum is σ = 1098365184. Its totient is φ = 128851840.

The previous prime is 428355701. The next prime is 428355713. The reversal of 428355708 is 807553824.

It is a super-2 number, since 2×428355708² = 366977225152362528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 428355708.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428355701) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6241 + ... + 29927.

It is an arithmetic number, because the mean of its divisors is an integer number (22882608).

Almost surely, 2^428355708 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428355708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (549182592).

428355708 is an abundant number, since it is smaller than the sum of its proper divisors (670009476).

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

428355708 is a wasteful number, since it uses less digits than its factorization.

428355708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23842 (or 23840 counting only the distinct ones).

The product of its (nonzero) digits is 268800, while the sum is 42.

The square root of 428355708 is about 20696.7559776889. The cubic root of 428355708 is about 753.8209205866.

The spelling of 428355708 in words is "four hundred twenty-eight million, three hundred fifty-five thousand, seven hundred eight".