428070708 has 72 divisors (see below), whose sum is σ = 1168721736. Its totient is φ = 131328000.

The previous prime is 428070677. The next prime is 428070737. The reversal of 428070708 is 807070824.

It can be written as a sum of positive squares in 4 ways, for example, as 132987024 + 295083684 = 11532^2 + 17178^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 186528 + ... + 188808.

Almost surely, 2^428070708 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 428070708, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (584360868).

428070708 is an abundant number, since it is smaller than the sum of its proper divisors (740651028).

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

428070708 is a wasteful number, since it uses less digits than its factorization.

428070708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2705 (or 2700 counting only the distinct ones).

The product of its (nonzero) digits is 25088, while the sum is 36.

The square root of 428070708 is about 20689.8696950947. The cubic root of 428070708 is about 753.6537023748.

The spelling of 428070708 in words is "four hundred twenty-eight million, seventy thousand, seven hundred eight".