420170328 has 144 divisors (see below), whose sum is σ = 1226960280. Its totient is φ = 134701056.

The previous prime is 420170297. The next prime is 420170339. The reversal of 420170328 is 823071024.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1634776 + ... + 1635032.

Almost surely, 2^420170328 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 420170328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (613480140).

420170328 is an abundant number, since it is smaller than the sum of its proper divisors (806789952).

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

420170328 is a wasteful number, since it uses less digits than its factorization.

420170328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 336 (or 291 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 420170328 is about 20498.0566883790. The cubic root of 420170328 is about 748.9884603300.

It can be divided in two parts, 4201 and 70328, that added together give a square (74529 = 273²).

The spelling of 420170328 in words is "four hundred twenty million, one hundred seventy thousand, three hundred twenty-eight".